MORTGAGE AND SECURITY AGREEMENT (OKLAHOMA) from SANDRIDGE MISSISSIPPIAN TRUST II, as Mortgagor, to WILMINGTON TRUST, NATIONAL ASSOCIATION, as Collateral Agent, as Mortgagee, for the benefit of THE SECURED PERSONS Dated as of April 23, 2012

Exhibit 10.20

Execution Copy

A POWER OF SALE HAS BEEN GRANTED IN THIS MORTGAGE.  A POWER OF SALE MAY ALLOW THE MORTGAGEE TO TAKE THE MORTGAGED PROPERTY AND SELL IT WITHOUT GOING TO A COURT IN A FORECLOSURE ACTION UPON DEFAULT BY MORTGAGOR UNDER THIS MORTGAGE.

MORTGAGE AND SECURITY AGREEMENT (OKLAHOMA)

from

▇▇▇▇▇▇▇▇▇ MISSISSIPPIAN TRUST II,

as Mortgagor,

to

WILMINGTON TRUST, NATIONAL ASSOCIATION,

as Collateral Agent, as Mortgagee,

for the benefit of

THE SECURED PERSONS

Dated as of April 23, 2012

THIS INSTRUMENT CONTAINS AFTER-ACQUIRED PROPERTY PROVISIONS AND SECURES PAYMENT OF FUTURE ADVANCES.  THIS MORTGAGE ALSO SECURES OTHER AMOUNTS PROVIDED HEREIN AND AT LAW.  THIS INSTRUMENT SECURES AN OBLIGATION THAT MAY INCREASE OR DECREASE FROM TIME TO TIME.

THE OIL AND GAS INTERESTS INCLUDED IN THE MORTGAGED PROPERTY WILL BE FINANCED AT THE WELLHEADS OF THE ▇▇▇▇▇ LOCATED ON THE PROPERTIES DESCRIBED IN EXHIBIT A HERETO.  THE MORTGAGED PROPERTY COVERED BY THIS INSTRUMENT INCLUDES AS-EXTRACTED COLLATERAL (INCLUDING BOTH (A) OIL, GAS AND OTHER MINERALS AND (B) ACCOUNTS ARISING OUT OF THE SALE THEREOF AT THE WELLHEADS OF

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THE ▇▇▇▇▇ LOCATED NOW OR HEREAFTER ON THE REAL PROPERTY DESCRIBED IN EXHIBIT A HERETO.  THIS INSTRUMENT IS TO BE FILED OF RECORD, AMONG OTHER PLACES, IN THE REAL ESTATE RECORDS OF THE COUNTIES REFERENCED IN EXHIBIT A HERETO AND SUCH FILING SHALL SERVE, AMONG OTHER PURPOSES, AS A UCC FINANCING STATEMENT.  A CARBON, PHOTOGRAPHIC, FACSIMILE OR OTHER REPRODUCTION OF THIS INSTRUMENT IS SUFFICIENT AS A FINANCING STATEMENT.  THE MORTGAGOR HAS AN INTEREST OF RECORD IN THE REAL ESTATE CONCERNED, WHICH INTEREST IS DESCRIBED IN EXHIBIT A HERETO.

THIS INSTRUMENT IS TO BE FILED AGAINST THE TRACT INDEX IN THE REAL ESTATE RECORDS OF EACH OKLAHOMA COUNTY WHERE ANY PART OF THE MORTGAGED PROPERTY DESCRIBED IN EXHIBIT A, OR ANY PORTION THEREOF IS LOCATED.

THIS MORTGAGE IS A MORTGAGE ON OIL AND GAS LEASES AND LEASEHOLD ESTATES, AS SUCH, NO REAL ESTATE MORTGAGE TAX IS DUE.

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THIS MORTGAGE AND SECURITY AGREEMENT (OKLAHOMA) (this “Mortgage”) is entered into as of April 23, 2012 (the “Effective Date”) by ▇▇▇▇▇▇▇▇▇ Mississippian Trust II, a Delaware statutory trust (the “Mortgagor”), whose address for notice is ▇/▇ ▇▇▇ ▇▇▇▇ ▇▇ ▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇ Trust Company, N.A., ▇▇▇ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇, ▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇▇, in favor of Wilmington Trust, National Association, as Collateral Agent (the “Mortgagee”), whose address for notice is ▇▇ ▇▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇, ▇▇▇▇▇▇▇▇▇▇▇, ▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇, for the benefit of the Secured Persons (as defined below) with respect to all Mortgaged Property (as defined below).

RECITALS

A.            On even date herewith, the Mortgagor, Swap Counterparties and the Mortgagee, as collateral agent, are executing a Collateral Agency Agreement (such agreement, as may from time to time be amended, restated, amended and restated, modified or supplemented, the “Collateral Agency Agreement”), pursuant to which, upon the terms and conditions stated therein, the Mortgagee, as collateral agent, has agreed to act on behalf of all Swap Counterparties with respect to the Collateral and to define the rights, duties, authority and responsibilities of the Mortgagee and the relationship among the Swap Counterparties regarding their interests in the Collateral.

B.            The Mortgagee and the other Secured Persons (as defined herein) have conditioned their obligations under the Secured Documents (as defined herein) upon the execution and delivery by the Mortgagor of this Mortgage.

C.            Therefore, in order to comply with the terms and conditions of the Secured Documents and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Mortgagor hereby agrees as follows:

ARTICLE I
DEFINITIONS

Section 1.01          Terms Defined Above.  As used in this Mortgage, each term defined above has the meaning indicated above.

Section 1.02          Terms Defined in the Collateral Agency Agreement.  Unless otherwise defined herein, each term defined in the Collateral Agency Agreement and used herein has the meaning given to it in the Collateral Agency Agreement.

Section 1.03          Terms Defined in the UCC.  Unless otherwise defined herein or in the Collateral Agency Agreement, each capitalized term defined in the Applicable UCC and used herein has the meaning given to it in the Applicable UCC.

Section 1.04          Certain Defined Terms.  As used in this Mortgage, the following terms have the meanings specified below:

“Applicable UCC” means the provisions of the Uniform Commercial Code presently in effect in the jurisdiction in which the relevant UCC Collateral is situated or which otherwise is applicable to the creation, perfection, the effect of perfection or nonperfection, or the priority of the Liens described herein or the rights and remedies of Mortgagee under this Mortgage.

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“Collateral” means, collectively, all the Mortgaged Property and all the UCC Collateral.

“Event of Default” has the meaning assigned to such term in Section 4.01.

“Hydrocarbon Interests” means all rights, titles, interests and estates now owned or hereafter acquired by the Mortgagor in and to the oil and gas leases, oil, gas and mineral leases, wellbore interests, and/or other liquid or gaseous hydrocarbon leases, mineral fee interests, overriding royalty and royalty interests, net profit interests and production payment interests, and other interests and estates and the lands and premises covered or affected thereby, including any reserved or residual interests of whatever nature, in each case, that are described on Exhibit A; and it is the intention of the Mortgagor and the Mortgagee herein to cover and affect hereby all interests which the Mortgagor may now own or may hereafter acquire in and to the interests and Property described on Exhibit A, even though the Mortgagor’s interests or the Property be incorrectly described on Exhibit A or a description of a part or all of the interests or Property described on Exhibit A or the Mortgagor’s interests therein be omitted, and notwithstanding that the interests as specified on Exhibit A may be limited to particular lands, specified depths or particular types of property interests.

“Hydrocarbons” means all oil, gas, casinghead gas, drip gasoline, natural gasoline, condensate, distillate, liquid hydrocarbons, gaseous hydrocarbons and all products refined or separated therefrom and all other minerals which may be produced and saved from or attributable to the Oil and Gas Properties of the Mortgagor, including all oil in tanks, and all rents, issues, profits, proceeds, products, revenues and other incomes from or attributable to the Hydrocarbon Interests or other properties constituting Oil and Gas Properties.

“Indemnified Parties” means the Mortgagee and each other Secured Person, their respective Affiliates, and each such Person’s officers, directors, employees, representatives, agents, attorneys, accountants and experts.

“Mortgaged Property” means the properties and assets described in Section 2.01(a) through Section 2.01(d).

“Oil and Gas Properties” means the Hydrocarbon Interests; the Properties now or hereafter pooled or unitized with the Hydrocarbon Interests; and all presently existing or future unitization, communitization, pooling agreements and declarations of pooled units and the units created thereby (including without limitation all units created under orders, regulations and rules or other official acts of any Governmental Authority and units created solely among working interest owners pursuant to operating agreements or otherwise) which may affect all or any portion of the Hydrocarbon Interests, the lands pooled or unitized therewith and the Mortgagor’s interests therein, together with all additions, substitutions, replacements and accessions to any and all of the foregoing.

“Permitted Liens” means all Liens permitted to be placed on the Mortgaged Properties under Section 14(a) of the Collateral Agency Agreement.

“Release Date” means the date upon which (a) all Secured Obligations (including, without limitation, all Swap Obligations (including interest accruing during the pendency of an insolvency or liquidation proceeding, regardless of whether allowed or allowable in such insolvency or liquidation proceeding) and all fees, costs, expenses and other amounts payable under the Principal Documents) shall

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have been paid in full in cash (other than contingent indemnification obligations) and (b) no Approved Swap Agreement is outstanding and in effect.

“Secured Documents” means the collective reference to the Collateral Agency Agreement and each Approved Swap Agreement.

“Secured Obligations” has the meaning assigned to such term in Section 2.04.

“Secured Persons” means the Collateral Agent, each Swap Counterparty, each Indemnified Party and any legal owner, holder, assignee or pledgee of any of the Secured Obligations.

“UCC Collateral” has the meaning assigned to such term in Section 2.02.

ARTICLE II
GRANT OF MORTGAGE AND SECURED OBLIGATIONS

Section 2.01          Grant of Mortgage.  To secure payment of the Secured Obligations and the performance of the covenants and obligations herein contained, the Mortgagor does by these presents hereby GRANT, BARGAIN, SELL, ALIEN, CONVEY, TRANSFER, MORTGAGE, ASSIGN, WARRANT, PLEDGE, HYPOTHECATE and CONFIRM to the Mortgagee for the benefit of the Secured Persons, all of the following described rights, titles, interests, properties and estates of Mortgagor:

(a)           All rights, titles, interests and estates now owned or hereafter acquired by the Mortgagor in and to the Oil and Gas Properties.

(b)           All rights, titles, interests and estates now owned or hereafter acquired by the Mortgagor in and to all geological, geophysical, engineering, accounting, title, legal and other technical or business data concerning the Oil and Gas Properties, the Hydrocarbons or any other item of property which are in the possession of the Mortgagor, including all books, files, records, magnetic media, computer records and other forms of recording or obtaining access to such data.

(c)           Any Property that may from time to time hereafter, by delivery or by writing of any kind, be subjected to the Liens hereof by the Mortgagor or by anyone on the Mortgagor’s behalf; and the Mortgagee is hereby authorized to receive the same at any time as additional security hereunder.

(d)           All other rights, titles, interests and estates now owned or hereafter acquired by the Mortgagor in and to the Oil and Gas Properties and every part and parcel thereof, including, without limitation, any rights, titles, interests and estates as the same may be enlarged by the discharge of any payments out of production or by the removal of any charges or Permitted Liens to which any of such Oil and Gas Properties or other rights, titles, interests or estates are subject or otherwise; all rights of the Mortgagor to Liens securing payment of proceeds from the sale of production from any of such Oil and Gas Properties, together with any and all renewals and extensions of any of such related rights, titles, interests or estates; all contracts and agreements supplemental to or amendatory of or in substitution for the contracts and agreements described or mentioned above; and any and all additional interests of any kind hereafter acquired by the Mortgagor in and to the such related rights, titles, interests or estates.

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TO HAVE AND TO HOLD the Mortgaged Property unto the Mortgagee for the use and benefit of the Mortgagee and the Secured Persons and to its and their successors and assigns, upon the terms, provisions and conditions herein set forth.

This Mortgage is an absolute and unconditional mortgage to Mortgagee of the Mortgaged Property, whether now in existence or hereafter arising, for the purpose of vesting in Mortgagee, subject to the Permitted Liens, a perfected mortgage lien in the Mortgaged Property.

Any fractions or percentages specified on Exhibit A in referring to the Mortgagor’s interests are solely for purposes of the warranties made by the Mortgagor pursuant to Section 3.01 and shall in no manner limit the quantum of interest affected by this Section 2.01 with respect to any Oil and Gas Property or with respect to any unit or well identified on Exhibit A.

Section 2.02          Grant of Security Interest.  The Mortgagor hereby grants to the Mortgagee, for the benefit of the Secured Persons, a security interest in and to all of the Mortgagor’s rights, titles and interests in and to the following Property of the Mortgagor now owned or at any time hereafter acquired by the Mortgagor or in which the Mortgagor now has or at any time in the future may acquire any right, title or interest and whether now existing or hereafter coming into existence (collectively, the “UCC Collateral”) as collateral security for the prompt and complete payment when due (whether at the stated maturity, by acceleration or otherwise) of the Secured Obligations:

(a)           all as-extracted collateral produced or arising from the Property described on Exhibit A;

(b)           all Accounts arising from the sale, assignment, transfer or disposition of Hydrocarbons;

(c)           all Deposit Accounts holding proceeds from the sale, assignment, transfer or disposition of Hydrocarbons (each, a “Pledged Deposit Account”);

(d)           all Mortgaged Property in which, but only to the extent that, a security interest can be created under Article 9 of the Uniform Commercial Code of the State of Oklahoma; and

(e)           to the extent not otherwise included, all Proceeds of any and all of the foregoing UCC Collateral and all supporting obligations given with respect thereto; provided, however, that the foregoing grant of a security interest, and the provisions of this Mortgage, shall not apply to up to $1,000,000 in cash held by The Bank of New York Mellon Trust Company, N.A., as Trustee of Mortgagor, as a reserve for the payment of Mortgagor’s administrative expenses.

Section 2.03          Deposit Account Control Agreements.

(a)           The Mortgagor shall cause or arrange for the Mortgagee to have control, in accordance with Section 9-104 of the Applicable UCC, over each Pledged Deposit Account that the Mortgagor at any time opens or maintains.

(b)           So long as no Event of Default shall have occurred and be continuing, the Mortgagor shall have the sole right to direct the disposition of funds with respect to each Pledged Deposit Account.

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(c)           If an Event of Default shall have occurred and be continuing, the Mortgagee may, at any time and without notice to, or consent from, the Mortgagor transfer, or direct the transfer of, funds from any Pledged Deposit Account to satisfy the Secured Obligations (as defined in the Collateral Agency Agreement).

(d)           Upon the occurrence and during the continuance of any Event of Default, the Mortgagee shall be authorized to send each bank at which a Pledged Deposit Account is maintained (with a copy to the Mortgagor) a notice instructing such bank that Mortgagee shall thereafter, and Mortgagee shall be authorized to, exercise exclusive control of the applicable Pledged Deposit Account.

Section 2.04          Secured Obligations.  This Mortgage is executed and delivered by the Mortgagor to secure and enforce the payment of the following (the “Secured Obligations”):

(a)           any sums which may be advanced or paid by the Mortgagee or the Swap Counterparties under the terms hereof or of the Collateral Agency Agreement or other Secured Documents on account of the failure of the Mortgagor to comply with the covenants of the Mortgagor contained herein, or the failure of the Mortgagor or other obligor to comply with the covenants of the Mortgagor; and all other obligations of the Mortgagor arising pursuant to the provisions of this Mortgage, including penalties, indemnities, legal and other fees, charges and expenses, and amounts advanced by and expenses incurred in order to preserve any Collateral, whether due after acceleration or otherwise;

(b)           all interest (including, without limitation, interest accruing at any post-default rate (including the Default Rate) and interest accruing after the filing of any petition in bankruptcy, or the commencement of any insolvency, reorganization or like proceeding, whether or not a claim for post-filing or post-petition interest is allowed in such proceeding) in respect of all of the Secured Obligations and all costs of collection and attorneys’ fees, all as provided herein and in the Collateral Agency Agreement, Approved Swap Agreements and other Security Instruments;

(c)           all Swap Obligations, indebtedness, obligations and liabilities, whether now in existence or hereafter arising, whether by acceleration or otherwise, of the Mortgagor to any Swap Counterparty under any Approved Swap Agreement, including, without limitation, any amounts payable in respect of a liquidation of, an acceleration of obligations under, or an early termination of, such Approved Swap Agreement, and any unpaid amounts owing in respect thereof;

(d)           all other obligations and liabilities of the Mortgagor to the Secured Persons, whether direct or indirect, absolute or contingent, due or to become due, or now existing or hereafter incurred, which may arise under, out of, or in connection with, the Secured Documents, in each case, whether on account of principal, interest, reimbursement obligations, payments in respect of an early termination date, fees, indemnities, costs, expenses or otherwise (including, without limitation, all fees and disbursements of counsel to the Secured Persons that are required to be paid by the Mortgagor pursuant to the terms of any of the Secured Documents); and

(e)           any and all renewals, modifications, substitutions, rearrangements or extensions of any of the foregoing, whether in whole or in part.

Section 2.05          Pro Rata Benefit.  This Mortgage is executed and granted for the pro rata benefit and security of the Secured Persons to secure the Secured Obligations for so long as same remains unpaid and thereafter until the Release Date.  This Section 2.05 shall not be construed to nor grant any of the

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Secured Persons the right to enforce the terms and provision of this Mortgage, such right being granted solely to the Mortgagee.

ARTICLE III
REPRESENTATIONS, WARRANTIES AND COVENANTS

The Mortgagor hereby represents, warrants and covenants as follows:

Section 3.01          Title.  To the extent of the undivided interests specified on Exhibit A, the Mortgagor has good and defensible title to and is possessed of the Mortgaged Property.  The Mortgagor has valid title to the UCC Collateral.  The Collateral is free of all Liens except Permitted Liens.

Section 3.02          Defend Title.  This Mortgage is, and always will be kept, a direct first priority Lien upon the Collateral; provided that Permitted Liens may exist as provided in the Collateral Agency Agreement, but no intent to subordinate the priority of the Liens created hereby is intended or inferred by such existence.  The Mortgagor will not create or suffer to be created or permit to exist any Lien prior or junior to or on a parity with the Lien of this Mortgage upon the Collateral or any part thereof other than such Permitted Liens.  The Mortgagor will warrant and defend the title to the Collateral, subject to the Permitted Liens, against the claims and demands of all other Persons whomsoever and will maintain and preserve the Lien created hereby (and its priority) until the Release Date.  If (i) an adverse claim be made against or a cloud develop upon the title to any part of the Collateral other than a Permitted Lien or (ii) any Person, including the holder of a Permitted Lien, shall challenge the priority or validity of the Liens created by this Mortgage, then the Mortgagor agrees, upon obtaining knowledge thereof, to immediately defend against such adverse claim, take appropriate action to remove such cloud or subordinate such Permitted Lien, in each case, at the Mortgagor’s sole cost and expense.  The Mortgagor further agrees that the Mortgagee may take such other action as it reasonably deems advisable to protect and preserve its interest in the Collateral, and in such event the Mortgagor will indemnify the Mortgagee against any and all cost, attorneys’ fees and other expenses which they may incur in defending against any such adverse claim or taking action to remove any such cloud.

Section 3.03          Not a Foreign Person.  The Mortgagor is not a “foreign person” within the meaning of sections 1445 and 7701 of the Internal Revenue Code of 1986, as amended (i.e., the Mortgagor is not a non-resident alien, foreign corporation, foreign partnership, foreign trust or foreign estate as those terms are defined in such Code and any regulations promulgated thereunder).

Section 3.04          Power to Create Lien and Security.  The Mortgagor has full trust power and lawful authority to grant, bargain, sell, assign, transfer, mortgage and convey a Lien on all of the Collateral in the manner and form herein provided.

Section 3.05          Abandon, Sales.  The Mortgagor will not sell, lease, assign, transfer or otherwise dispose or abandon any of the Collateral before the Release Date except (i) for the sale, assignment, transfer and disposition of Hydrocarbons in the ordinary course of business, (ii) as consented to by a Dual-Vote Majority and/or (iii) as otherwise contemplated by this Mortgage.

Section 3.06          Failure to Perform.  The Mortgagor agrees that if it fails to perform any act or to take any action which it is required to perform or take hereunder or pay any money which the Mortgagor is required to pay hereunder, the Mortgagee, in the Mortgagor’s name or its own name, may, but shall not be obligated to, perform or cause to perform such act or take such action or pay such money, and any

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expenses so incurred by it and any money so paid by it shall be a demand obligation owing by the Mortgagor to the Mortgagee, and the Mortgagee, upon making such payment, shall be subrogated to all of the rights of the Person receiving such payment.  Each amount due and owing by the Mortgagor to the Mortgagee pursuant to this Mortgage shall bear interest from the date of demand on Mortgagor therefor until paid at the Default Rate.

ARTICLE IV
RIGHTS AND REMEDIES

Section 4.01          Event of Default.  A Triggering Event under the Collateral Agency Agreement shall be an “Event of Default” under this Mortgage.

Section 4.02          Foreclosure and Other Remedies.

(a)           After the occurrence of an Event of Default, the lien evidenced hereby shall be subject to foreclosure, as Mortgagee may elect, in any manner provided for herein or provided for or required by law.

(b)           After the occurrence of an Event of Default, and if such event shall be continuing, Mortgagee shall have the right and power to sell, to the extent permitted by law, at one or more sales, as an entirety or in parcels, as Mortgagee may elect, the Mortgaged Properties, at such place or places and otherwise in such manner and upon such notice as may be required by law, or, in the absence of any such requirement, as Mortgagee may deem appropriate, and to make conveyance to the purchaser or purchasers.  Mortgagee may postpone the sale of all or any portion of the Mortgaged Properties by public announcement at the time and place of such sale and from time to time thereafter may further postpone such sale by public announcement made at the time of sale fixed by the preceding postponement.

(c)           If any of the Secured Obligations shall become due and payable and shall not be promptly paid, the Mortgagee shall have the right and power to proceed by a suit or suits in equity or at law, whether for the specific performance of any covenant or agreement herein contained or in aid of the execution of any power herein granted, or for any foreclosure hereunder or for the sale of the Collateral under the judgment or decree of any court or courts of competent jurisdiction, or for the appointment of a receiver pending any foreclosure hereunder or the sale of the Collateral under the order of a court or courts of competent jurisdiction or under executory or other legal process, or for the enforcement of any other appropriate legal or equitable remedy.  Any money advanced by the Mortgagee in connection with any such receivership shall be a demand obligation (which obligation the Mortgagor hereby expressly promises to pay) owing by the Mortgagor to the Mortgagee and shall bear interest from the date of making such advance by the Mortgagee until paid at the Default Rate.

(d)           Mortgagee shall have the right to become the purchaser at any sale held by Mortgagee or by any court, receiver or public officer, and shall have the right to credit upon the amount of the bid made therefor the amount payable out of the net proceeds of such sale to it.

(e)           Any sale or sales of the Mortgaged Properties, whether under the power of sale herein granted and conferred or by virtue of judicial proceedings, shall operate to divest all right, title, interest, claim and demand whatsoever either at law or in equity, of Mortgagor of, in and to the premises and the property sold, and shall be a perpetual bar, both at law and in equity, against Mortgagor,

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Mortgagor’s successors or assigns, and against any and all Persons claiming or who shall thereafter claim all or any of the property sold from, through or under Mortgagor, or Mortgagor’s successors or assigns.

(f)            Any sale by Mortgagee of the Mortgaged Properties may be made in any county in which any part of the Mortgaged Properties to be sold at such sale may be situated.  Mortgagee may, from time to time, postpone the sale by public announcement thereof at the time and place noticed therefor.  If the Mortgaged Properties consists of several parcels or interests, Mortgagee may designate the order in which the same shall be offered for sale or sold.  Mortgagor waives all rights to direct the order in which any of the Mortgaged Properties will be sold in the event of any sale under this Mortgage, and also any right to have any of the Mortgaged Properties marshaled upon any sale.

(g)           Notwithstanding any other provisions of this Mortgage, any lease of Minerals covered by this Mortgage which are subject to the Mineral Leasing Act of 1920 as amended, and the regulations promulgated thereunder, shall not be sold or otherwise disposed of to any party other than the citizens of the United States, or to associations of such citizens or to any corporation organized under the laws of the United States, or any state or territory thereof that are qualified to own or control interests in such leases under the provisions of such Act and regulations, or to Persons who may acquire ownership or interest in such leases under the provisions of 30 U.S.C. §184(g) if applicable, as such Act or regulations are now or may be from time to time in effect.

(h)           Without limitation of any of the foregoing remedies, Mortgagor hereby grants to and confers on Mortgagee the power to sell all or any portion of the Mortgaged Properties in the manner and pursuant to the procedures set forth in the “Oklahoma Power of Sale Mortgage Foreclosure Act,” 46 O.S. Supp. §§ 40-49, as the same may be hereafter amended and in effect from time to time (the “Oklahoma POS Act”) or pursuant to other applicable statutory or judicial authority.  If no cure is effected within the time limits set forth in the Oklahoma POS Act, Mortgagee may then proceed in the manner and subject to the conditions of the Oklahoma POS Act to send to Mortgagor and other necessary parties a notice of sale and may sell and convey the Mortgaged Properties in accordance with the Oklahoma POS Act.  Mortgagee may foreclose this Mortgage by exercising said power of sale or, at Mortgagee’s sole option, by judicial foreclosure proceedings as provided by law.  No action of Mortgagee based upon the provisions contained herein or in the Oklahoma POS Act, including, without limitation, the giving of the notice of intent to foreclose by power of sale or the notice of sale, shall constitute an election of remedies which would preclude Mortgagee from accelerating the secured obligations and pursuing judicial foreclosure before or at any time after commencement of the power of sale foreclosure procedure.  Notwithstanding anything contained in this Mortgage to the contrary, any notices of sale given in accordance with the requirements of the Oklahoma POS Act shall constitute sufficient notice of sale.  The conduct of a sale pursuant to a power of sale shall be sufficient hereunder if conducted in accordance with the requirements of the Oklahoma POS Act and other governmental requirements of the State of Oklahoma in effect at the time of such sale, notwithstanding any other provision contained in this Mortgage to the contrary.  In the event of conflict between the provisions hereof and the Oklahoma POS Act, the Oklahoma POS Act shall control.

A POWER OF SALE HAS BEEN GRANTED IN THIS MORTGAGE.  A POWER OF SALE MAY ALLOW THE MORTGAGEE TO TAKE THE MORTGAGED PROPERTY AND SELL IT WITHOUT GOING TO A COURT IN A FORECLOSURE ACTION UPON DEFAULT BY MORTGAGOR UNDER THIS MORTGAGE.

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(i)            If an Event of Default shall occur and be continuing, then (i) the Mortgagee shall be entitled to all of the rights, powers and remedies afforded a secured party by the Applicable UCC with reference to the UCC Collateral and (ii) the Mortgagee may proceed as to any UCC Collateral in accordance with the rights and remedies granted under this Mortgage or applicable law in respect of the UCC Collateral.  Such rights, powers and remedies shall be cumulative and in addition to those granted to the Mortgagee under any other provision of this Mortgage or under any other Secured Document.  Written notice mailed to Mortgagor as provided herein at least ten (10) days prior to the date of public sale of any part of the Collateral which is personal property subject to the provisions of the Applicable UCC, or prior to the date after which private sale of any such part of the Collateral will be made, shall constitute reasonable notice.  Without in any manner limiting the generality of any of the other provisions of this Mortgage, this Mortgage is effective as a financing statement and may be filed of record in the real estate records with respect to all as-extracted collateral comprising any part of the Collateral pursuant to the Applicable UCC.  Mortgagor hereby authorizes Mortgagee to file, in any filing or recording office, one or more UCC financing statements describing the UCC Collateral and any renewal, continuation or amendment statements thereof.

(j)            The Collateral may be sold in one or more parcels and to the extent permitted by applicable law in such manner and order as the Mortgagee, in its sole discretion, may elect, it being expressly understood and agreed that the right of sale arising out of any Event of Default shall not be exhausted by any one or more sales.

(k)           The Mortgagee may appoint or delegate any one or more Persons as agent to perform any act or acts necessary or incident to any sale held by the Mortgagee, including the posting of notices, in the name and on behalf of the Mortgagee.

Section 4.03          Possession of Mortgaged Property.  If an Event of Default shall have occurred and be continuing, then, to the extent permitted by applicable law, the Mortgagee shall have the right and power to enter into and upon and take possession of all or any part of the Collateral in the possession of the Mortgagor, its successors or assigns, or its or their agents or servants, and may exclude the Mortgagor, its successors or assigns, and all persons claiming under the Mortgagor, and its or their agents or servants wholly or partly therefrom; and, holding the same, the Mortgagee may use, administer, manage, operate and control the Collateral and conduct the business thereof to the same extent as the Mortgagor, its successors or assigns, might at the time do and may exercise all rights and powers of the Mortgagor, in the name, place and stead of the Mortgagor, or otherwise as the Mortgagee shall deem best.  All costs, expenses and liabilities of every character incurred by the Mortgagee in administering, managing, operating, and controlling the Mortgaged Property shall constitute a demand obligation (which obligation the Mortgagor hereby expressly promises to pay) owing by the Mortgagor to the Mortgagee and shall bear interest from the date of demand on Mortgagor therefor until paid at the Default Rate.

Section 4.04          Remedies Cumulative, Concurrent and Nonexclusive.  Every right, power, privilege and remedy herein given to the Mortgagee shall be cumulative and in addition to every other right, power and remedy herein specifically given or now or hereafter existing in equity, at law or by statute.  Each and every right, power, privilege and remedy whether specifically herein given or otherwise existing may be exercised from time to time and so often and in such order as may be deemed expedient by the Mortgagee, and the exercise, or the beginning of the exercise, or the abandonment, of any such right, power, privilege or remedy shall not be deemed a waiver of the right to exercise, at the same time or thereafter any other right, power, privilege or remedy.  No delay or omission by the Mortgagee or any other Secured Person in the exercise of any right, power or remedy shall impair any such right, power,

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privilege or remedy or operate as a waiver thereof or of any other right, power, privilege or remedy then or thereafter existing.

Section 4.05          Discontinuance of Proceedings.  If the Mortgagee shall have proceeded to invoke any right, remedy or recourse permitted hereunder or under any Secured Document or available at law and shall thereafter elect to discontinue or abandon same for any reason, then it shall have the unqualified right so to do and, in such an event, the parties shall be restored to their former positions with respect to the Secured Obligations, this Mortgage, the Collateral Agency Agreement, the Collateral and otherwise, and the rights, remedies, recourses and powers of the Mortgagee, as applicable, shall continue as if same had never been invoked.

Section 4.06          No Release of Obligations.  Neither the Mortgagor nor any other Person hereafter obligated for payment of all or any part of the Secured Obligations shall be relieved of such obligation by reason of:  the failure of any Person so obligated to foreclose the Lien of this Mortgage or to enforce any provision hereunder or under the Collateral Agency Agreement or any other Secured Document;  the release, regardless of consideration, of the Collateral or any portion thereof or interest therein or the addition of any other property to the Collateral; or by any other act or occurrence save and except upon the occurrence of the Release Date.

Section 4.07          Release of and Resort to Collateral.  The Mortgagee may release, regardless of consideration, any part of the Collateral without, as to the remainder, in any way impairing, affecting, subordinating or releasing the Lien created in or evidenced by this Mortgage or its stature as a first and prior Lien in and to the Collateral and without in any way releasing or diminishing the liability of any Person liable for the repayment of the Secured Obligations.  For payment of the Secured Obligations, the Mortgagee may resort to any other security therefor held by the Mortgagee in such order and manner as the Mortgagee may elect.

Section 4.08          Waiver of Redemption, Notice and Marshalling of Assets, Etc.  To the fullest extent permitted by law, the Mortgagor hereby irrevocably and unconditionally waives and releases all benefits that might accrue to the Mortgagor by virtue of any present or future moratorium law or other law exempting the Collateral from attachment, levy or sale on execution or providing for any appraisement, valuation, stay of execution, exemption from civil process, redemption or extension of time for payment;  all notices of any Event of Default or of the Mortgagee’s or any other Secured Person’s intention to accelerate the Secured Obligations or of any election to exercise or any actual exercise of any right, remedy or recourse provided for hereunder or under any Secured Document or available at law; and any right to a marshalling of assets or a sale in inverse order of alienation.  Notwithstanding the foregoing, in the event of any judicial foreclosure of this Mortgage with respect to the Mortgaged Property, or any part thereof, appraisement of the Mortgaged Property is hereby waived or not waived, at the option of Mortgagee, such option to be exercised at the time of the entry of the foreclosure judgment or any time prior thereto.  If any law referred to in this Mortgage and now in force, of which the Mortgagor or its successor or successors might take advantage despite the provisions hereof, shall hereafter be repealed or cease to be in force, such law shall thereafter be deemed not to constitute any part of the contract herein contained or to preclude the operation or application of the provisions hereof.  If the laws of any state which provides for a redemption period do not permit the redemption period to be waived, the redemption period shall be specifically reduced to the minimum amount of time allowable by statute.

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Section 4.09          Application of Proceeds.  The proceeds of any foreclosure sale of the Collateral or any part thereof and all other monies received in any other proceedings for the enforcement hereof shall be applied:

(a)           First, to the payment of all reasonable expenses incurred by the Mortgagee incident to the enforcement of this Mortgage, the Collateral Agency Agreement or any Secured Document to collect any portion of the Secured Obligations (including, without limiting the generality of the foregoing, expenses of any entry or taking of possession, of any sale, of advertisement thereof, and of conveyances, and court costs, compensation of agents and employees, and legal fees), and to the payment of all other reasonable charges, expenses, liabilities and advances incurred or made by the Mortgagee under this Mortgage or in executing any trust or power hereunder; and

(b)           Second, as set forth in Section 6(b) of the Collateral Agency Agreement (but without duplication of the amounts applied in (a) above).

Section 4.10          Indemnity.  THE INDEMNIFIED PARTIES SHALL NOT BE LIABLE, IN CONNECTION WITH ANY ACTION TAKEN, FOR ANY LOSS SUSTAINED BY THE MORTGAGOR RESULTING FROM AN ASSERTION THAT THE MORTGAGEE HAS RECEIVED FUNDS FROM THE PRODUCTION OF HYDROCARBONS CLAIMED BY THIRD PERSONS OR ANY ACT OR OMISSION OF ANY INDEMNIFIED PARTY IN ADMINISTERING, MANAGING, OPERATING OR CONTROLLING THE COLLATERAL INCLUDING SUCH LOSS WHICH MAY RESULT FROM THE ORDINARY NEGLIGENCE OF AN INDEMNIFIED PARTY UNLESS SUCH LOSS IS CAUSED BY THE WILLFUL MISCONDUCT OR GROSS NEGLIGENCE OF THE RELEVANT INDEMNIFIED PARTY.  NO INDEMNIFIED PARTY WILL BE OBLIGATED TO PERFORM OR DISCHARGE ANY OBLIGATION, DUTY OR LIABILITY OF THE MORTGAGOR.  THE MORTGAGOR SHALL AND DOES HEREBY AGREE TO INDEMNIFY EACH INDEMNIFIED PARTY FOR, AND TO HOLD EACH INDEMNIFIED PARTY HARMLESS FROM, ANY AND ALL LIABILITY, LOSS OR DAMAGE WHICH MAY OR MIGHT BE INCURRED BY ANY INDEMNIFIED PARTY BY REASON OF THIS MORTGAGE OR THE EXERCISE OF RIGHTS OR REMEDIES HEREUNDER, UNLESS SUCH LIABILITY, LOSS OR DAMAGE IS CAUSED BY THE WILLFUL MISCONDUCT OR GROSS NEGLIGENCE OF THE RELEVANT INDEMNIFIED PARTY.  IF ANY INDEMNIFIED PARTY SHALL MAKE ANY EXPENDITURE ON ACCOUNT OF ANY SUCH LIABILITY, LOSS OR DAMAGE, THE AMOUNT THEREOF, INCLUDING COSTS, EXPENSES AND REASONABLE ATTORNEYS’ FEES, SHALL BE A DEMAND OBLIGATION (WHICH OBLIGATION THE MORTGAGOR HEREBY EXPRESSLY PROMISES TO PAY) OWING BY THE MORTGAGOR TO SUCH INDEMNIFIED PARTY AND SHALL BEAR INTEREST FROM THE DATE OF DEMAND THEREFOR UNTIL PAID AT THE DEFAULT RATE.  THE MORTGAGOR HEREBY ASSENTS TO, RATIFIES AND CONFIRMS ANY AND ALL ACTIONS OF EACH INDEMNIFIED PARTY WITH RESPECT TO THE COLLATERAL TAKEN UNDER AND IN COMPLIANCE WITH THE TERMS OF THIS MORTGAGE.  THE LIABILITIES OF THE MORTGAGOR AS SET FORTH IN THIS SECTION 4.10 SHALL SURVIVE THE TERMINATION OF THIS MORTGAGE.

Section 4.11          Limitations on Rights and Waivers.  All rights, powers and remedies herein conferred shall be exercisable by Mortgagee only to the extent not prohibited by applicable law; and all waivers and relinquishments of rights and similar matters shall be effective only to the extent such waivers or relinquishments are not prohibited by applicable law.

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ARTICLE V
MISCELLANEOUS

Section 5.01          Instrument Construed.  This Mortgage may be construed as a mortgage, conveyance, assignment, security agreement, hypothecation or contract, or any one or more of them, in order fully to effectuate the Lien hereof and the purposes and agreements herein set forth.

Section 5.02          Recording.  Mortgagor will cause this Mortgage and all amendments and supplements thereto and substitutions therefor to be recorded, filed, re-recorded and refiled in such manner and in such places as Mortgagee shall reasonably request and will pay all such recording, filing, re-recording and refiling taxes, fees and other charges.

Section 5.03          Releases.

(a)           Full Release.  Upon the Release Date, (i) all Liens granted hereunder shall automatically be released without any further action on the part of any Person and (ii) the Mortgagee shall forthwith cause satisfaction and discharge of this Mortgage to be entered upon the record at the expense of the Mortgagor and shall promptly execute and deliver or cause to be executed and delivered to the Mortgagor such instruments of satisfaction, release, re-conveyance and reassignment or other documents as may be appropriate.  Otherwise, this Mortgage shall remain and continue in full force and effect.

(b)           Partial Release.  If any of the Collateral shall be sold, assigned, transferred or otherwise disposed of by the Mortgagor in a transaction that is not prohibited by Section 3.05 of this Mortgage, then (i) such Collateral shall be so sold, assigned, transferred or otherwise disposed of free and clear of all Liens thereon granted hereunder (and such Liens on such Collateral shall automatically be released without further action on the part of any Person) and (ii) the Mortgagee, at the request and sole expense of the Mortgagor, shall promptly execute and deliver or cause to be executed and delivered to the Mortgagor such instruments of release, re-conveyance and reassignment or other documents reasonably necessary or desirable for the release of the Liens created hereby on such Collateral.

Section 5.04          Severability.  If any provision hereof is invalid or unenforceable in any jurisdiction, the other provisions hereof shall remain in full force and effect in such jurisdiction and the remaining provisions hereof shall be liberally construed in favor of the Mortgagee and the other Secured Persons in order to effectuate the provisions hereof.  The invalidity or unenforceability of any provision hereof in any jurisdiction shall not affect the validity or enforceability of any such provision in any other jurisdiction.

Section 5.05          Successors and Assigns.  The terms used to designate any party or group of Persons shall be deemed to include the respective heirs, legal representatives, successors and assigns of such Persons.

Section 5.06          Application of Payments to Certain Obligations.  If any part of the Secured Obligations cannot be lawfully secured by this Mortgage or if any part of the Collateral cannot be lawfully subject to the Lien hereof to the full extent of the Secured Obligations, then all payments made shall be applied on said Secured Obligations first in discharge of that portion thereof which is not secured by this Mortgage.

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Section 5.07          Nature of Covenants.  The covenants and agreements herein contained shall constitute covenants running with the land and interests covered or affected hereby and shall be binding upon the heirs, legal representatives, successors and assigns of the parties hereto.

Section 5.08          Notices.  All notices, requests, consents, demands and other communications required or permitted hereunder shall be in writing and shall be deemed sufficiently given or furnished if delivered by registered or certified United States mail, postage prepaid, or by personal service (including express or courier service) at their respective addresses below:

(unless changed by similar notice in writing given by the particular party whose address is to be changed). Any such notice or communication shall be deemed to have been given either at the time of personal delivery or, in the case of delivery at the address and in the manner provided herein, upon receipt; provided that, service of notice as required by the laws of any state in which portions of the Collateral may be situated shall for all purposes be deemed appropriate and sufficient with the giving of such notice.

Section 5.09          Counterparts.  This Mortgage is being executed in several counterparts, all of which are identical,.  Each of such counterparts shall for all purposes be deemed to be an original and all such counterparts shall together constitute but one and the same instrument.

Section 5.10          Governing Law.  Insofar as permitted by otherwise applicable law, this Mortgage shall be construed under and governed by the laws of the State of Oklahoma.

Section 5.11          Exculpation Provisions.  EACH OF THE PARTIES HERETO SPECIFICALLY AGREES THAT IT HAS A DUTY TO READ THIS MORTGAGE; AND AGREES THAT IT IS CHARGED WITH NOTICE AND KNOWLEDGE OF THE TERMS OF THIS MORTGAGE; THAT IT HAS IN FACT READ THIS MORTGAGE AND IS FULLY INFORMED AND HAS FULL NOTICE AND KNOWLEDGE OF THE TERMS, CONDITIONS AND EFFECTS OF THIS MORTGAGE; THAT IT HAS BEEN REPRESENTED BY INDEPENDENT LEGAL COUNSEL OF ITS CHOICE THROUGHOUT THE NEGOTIATIONS PRECEDING ITS EXECUTION OF THIS MORTGAGE; AND HAS RECEIVED THE ADVICE OF ITS ATTORNEY IN ENTERING INTO THIS MORTGAGE; AND THAT IT RECOGNIZES THAT CERTAIN OF THE TERMS OF THIS MORTGAGE RESULT IN ONE PARTY ASSUMING THE LIABILITY INHERENT IN SOME ASPECTS OF THE TRANSACTION AND RELIEVING THE OTHER PARTY OF ITS RESPONSIBILITY FOR SUCH LIABILITY.  EACH PARTY HERETO AGREES AND COVENANTS THAT IT WILL NOT CONTEST THE VALIDITY OR ENFORCEABILITY OF ANY

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EXCULPATORY PROVISION OF THIS MORTGAGE ON THE BASIS THAT THE PARTY HAD NO NOTICE OR KNOWLEDGE OF SUCH PROVISION OR THAT THE PROVISION IS NOT “CONSPICUOUS.”

Section 5.12          Amendments.  Subject to the provisions of the Collateral Agency Agreement, this Mortgage may be amended or modified by the Mortgagor and the Mortgagee in writing.

Section 5.13          Entire Agreement; Collateral Agency Agreement Controlling.  THIS WRITTEN MORTGAGE AND THE OTHER PRINCIPAL DOCUMENTS TOGETHER REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES.  THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.  In the event of a conflict between any provision hereof and any provision of the Collateral Agency Agreement, the provisions of the Collateral Agency Agreement shall govern and control.

Section 5.14          Execution of Financing Statements.  Pursuant to the Applicable UCC, the Mortgagor authorizes the Mortgagee, its counsel or its representative, at any time and from time to time, to file or record financing statements, continuation statements, amendments thereto and other filing or recording documents or instruments with respect to the Collateral without the signature of the Mortgagor in such form and in such offices as the Mortgagee reasonably determines appropriate to perfect the security interests of the Mortgagee under this Mortgage.

In that regard, the following information is provided:

Section 5.15          References.  The words “herein,” “hereof,” “hereunder” and other words of similar import when used in this Mortgage refer to this Mortgage as a whole, and not to any particular article, section or subsection.  Any reference herein to a Section shall be deemed to refer to the applicable Section of this Mortgage unless otherwise stated herein.  Any reference herein to an exhibit or schedule shall be deemed to refer to the applicable exhibit or schedule attached hereto unless otherwise stated herein.  The words “include,” “includes” and “including” as used in this Mortgage shall be deemed to be followed by the phrase “without limitation.”

[SIGNATURES BEGIN NEXT PAGE]

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Executed on this 16th day of April, 2012, to be effective as of the Effective Date.

This instrument was acknowledged before me on April 16, 2012 by ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇, Vice President of The Bank of New York Mellon Trust Company, N.A., a national banking association, on behalf of said association as the Trustee of ▇▇▇▇▇▇▇▇▇ Mississippian Trust II, a Delaware statutory trust.

Signature Page - Trust Mortgage

EXHIBIT A

(See attached.)

Exhibit A-1