Exhibit 4.2


 


NEITHER THIS SECURITY NOR ANY SECURITIES WHICH MAY BE ISSUED
UPON EXERCISE OF THIS SECURITY HAVE BEEN REGISTERED WITH THE UNITED STATES SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES
COMMISSION OF ANY U.S. STATE OR OTHER JURISDICTION OR ANY EXCHANGE OR SELF-REGULATORY ORGANIZATION, IN RELIANCE UPON EXEMPTIONS
FROM REGISTRATION UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED, AND SUCH OTHER LAWS AND REQUIREMENTS, AND, ACCORDINGLY,
MAY NOT BE OFFERED OR SOLD, EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT OR LISTING OR PURSUANT TO AN AVAILABLE EXEMPTION
FROM, OR IN A TRANSACTION NOT SUBJECT TO, SUCH REGISTRATION AND/OR LISTING REQUIREMENTS AS EVIDENCED BY A LEGAL OPINION OF COUNSEL
TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF WHICH WILL BE REASONABLY ACCEPTABLE TO THE COMPANY.


 


NDB ENERGY, INC.


 


FORM OF SERIES C WARRANT


 


No. C-______


 


_______________, 2012


 


NDB Energy, Inc., a Nevada corporation (the “Company”),
hereby certifies that ______________________________, its permissible transferees, designees, successors and assigns (collectively,
the “Holder”), for value received, is entitled to purchase from the Company at any time and from time to time
commencing on the date first appearing above (the “Issuance Date”), up to and through 12:01a.m. (EST) on the
date seven (7) years from the Issuance Date (the “Termination Date”) up to ________ shares (each, a “Share”
and collectively the “Shares”) of the Company’s common stock, par value $0.001 (the “Common Stock”),
at an exercise price per Share equal to $3.00 (the “Exercise Price”). The number of Shares purchasable hereunder
and the Exercise Price are subject to adjustment as provided in Section 4 hereof.


 


This Warrant is being delivered pursuant
to the terms and conditions of that certain Share Exchange Agreement (the “SEA”) date March <>, 2012 by
and among the Company, Armada Oil, Inc. (“Armada”), the Holder and the other signatories thereto, in exchange
for the Armada Series B Stock Purchase Warrants owned by the Holder and exchanged and cancelled in accordance with the terms of
the SEA.


 


		19.	Method of Exercise; Payment.



 


(a)Exercise. The purchase rights
represented by this Warrant may be exercised, for cash only, by the Holder, in whole or in part, at any time, or from time to time,
by the surrender of this Warrant (with the notice of exercise form (the “Notice of Exercise”) attached hereto
as Exhibit A duly executed) at the principal office of the Company, and by payment to the Company of an amount equal to
the Exercise Price multiplied by the number of the Shares being purchased, which amount may be paid, at the election of the Holder,
by wire transfer or certified check payable to the order of the Company. The person or persons in whose name(s) any certificate(s)
representing Shares shall be issuable upon exercise of this Warrant shall be deemed to have become the holder(s) of record of,
and shall be treated for all purposes as the record holder(s) of, the Shares represented thereby (and such Shares shall be deemed
to have been issued) immediately prior to the close of business on the date or dates upon which this Warrant is exercised.


 


(b)Stock Certificates. In the
event of any exercise of the rights represented by this Warrant, as promptly as practicable after this Warrant is surrendered and
delivered to the Company along with all other appropriate documentation on or after the date of exercise and in any event within
ten (10) days thereafter, the Company at its expense shall issue and deliver to the person or persons entitled to receive the same
a certificate or certificates for the number of Shares issuable upon such exercise. In the event this Warrant is exercised in part,
the Company at its expense will execute and deliver a new Warrant of like tenor exercisable for the number of Shares for which
this Warrant may then be exercised.



    	 



    	 



    



 


(c)Taxes. The issuance of the
Shares upon the exercise of this Warrant, and the delivery of certificates or other instruments representing such Shares, shall
be made without charge to the Holder for any tax or other charge in respect of such issuance.


 


		20.	Warrant.



 


(a)Transfer and Replacement.
Subject to compliance with applicable securities laws, this Warrant and all rights hereunder (including, without limitation, any
registration rights) are transferable, in whole or in part, upon surrender of this Warrant at the principal office of the Company
or its designated agent, together with a written assignment of this Warrant substantially in the form attached hereto as Exhibit
B duly executed by the Holder or its agent or attorney and funds sufficient to pay any transfer taxes payable upon the making of
such transfer. Upon such surrender and, if required, such payment, the Company shall execute and deliver a new Warrant or Warrants
in the name of the assignee or assignees and in the denomination or denominations specified in such instrument of assignment, and
shall issue to the assignor a new Warrant evidencing the portion of this Warrant not so assigned, and this Warrant shall promptly
be cancelled. A Warrant, if properly assigned, may be exercised by a new holder for the purchase of Warrant Shares without having
a new Warrant issued. The Holder consents that the Company may, if it desires, permit the transfer of this Warrant out of the Holder’s
name only when the Holder’s request for transfer is accompanied by an opinion of counsel reasonably satisfactory to the Company
that neither the sale nor the proposed transfer results in a violation of the Securities Act of 1933, as amended (the “Securities
Act”), or any applicable state “blue sky” laws. At any time prior to the exercise hereof, this Warrant may
be exchanged upon presentation and surrender to the Company, alone or with other warrants of like tenor of different denominations
registered in the name of the same Holder, for another warrant or warrants of like tenor in the name of such Holder exercisable
for the aggregate number of Shares as the warrant or warrants surrendered.


 


(b)Replacement of Warrant. Upon
receipt of evidence reasonably satisfactory to the Company of the loss, theft, destruction, or mutilation of this Warrant and,
in the case of any such loss, theft, or destruction, upon delivery of an indemnity agreement reasonably satisfactory in form and
amount to the Company, or, in the case of any such mutilation, upon surrender and cancellation of this Warrant, the Company, at
its expense, will execute and deliver in lieu thereof, a new Warrant of like tenor.


 


(c)Cancellation. Payment of Expenses.
Upon the surrender of this Warrant in connection with any transfer, exchange or replacement as provided in this Section 2, this
Warrant shall be promptly canceled by the Company. The Holder shall pay all taxes and all other expenses (including legal expenses,
if any, incurred by the Holder or transferees) and charges payable in connection with the preparation, execution and delivery of
Warrants pursuant to this Section 2.


 


(d)Warrant Register. The Company
shall maintain, at its principal executive offices (or at the offices of the transfer agent for the Warrant or such other office
or agency of the Company as it may designate by notice to the holder hereof), a register for this Warrant (the “Warrant
Register”), in which the Company shall record the name and address of the person in whose name this Warrant has been
issued, as well as the name and address of each transferee and each prior owner of this Warrant.


 


		21.	Rights and Obligations of Holders of this Warrant.



 


The Holder of this Warrant shall not, by
virtue hereof, be entitled to any rights of a shareholder in the Company, either at law or in equity; provided, however, that in
the event any certificate representing shares of Common Stock or other securities is issued to the holder hereof upon exercise
of this Warrant, such holder shall, for all purposes, be deemed to have become the holder of record of such Common Stock on the
date on which this Warrant, together with a duly executed Notice of Exercise, was surrendered and payment of the aggregate Exercise
Price was made, irrespective of the date of delivery of such Common Stock certificate.


 


		22.	Adjustments.



 


During the Exercise Period, the Exercise
Price and the number of Warrant Shares shall be subject to adjustment from time to time as provided in this Paragraph 4.



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(a)Subdivision or Combination of
Common Stock. If the Company at any time subdivides (by any stock split, stock dividend, recapitalization, reorganization,
reclassification or otherwise) the shares of Common Stock acquirable hereunder into a greater number of shares, then, after the
date of record for effecting such subdivision, the Exercise Price in effect immediately prior to such subdivision will be proportionately
reduced. If the Company at any time combines (by reverse stock split, recapitalization, reorganization, reclassification or otherwise)
the shares of Common Stock acquirable hereunder into a smaller number of shares, then, after the date of record for effecting such
combination, the Exercise Price in effect immediately prior to such combination will be proportionately increased.


 


(b)Adjustment in Number of Shares. Upon each
adjustment of the Exercise Price pursuant to the provisions of this Paragraph 4, the number of shares of Common Stock issuable
upon exercise of this Warrant shall be adjusted by multiplying a number equal to the Exercise Price in effect immediately prior
to such adjustment by the number of shares of Common Stock issuable upon exercise of this Warrant immediately prior to such adjustment
and dividing the product so obtained by the adjusted Exercise Price.


 


(c)Consolidation, Merger or Sale. In case of
any consolidation of the Company with, or merger of the Company into any other corporation, or in case of any sale or conveyance
of all or substantially all of the assets of the Company other than in connection with a plan of complete liquidation of the Company,
then as a condition of such consolidation, merger or sale or conveyance, adequate provision will be made whereby the holder of
this Warrant will have the right to acquire and receive upon exercise of this Warrant in lieu of the shares of Common Stock immediately
theretofore acquirable upon the exercise of this Warrant, such shares of stock, securities or assets as may be issued or payable
with respect to or in exchange for the number of shares of Common Stock immediately theretofore acquirable and receivable upon
exercise of this Warrant had such consolidation, merger or sale or conveyance not taken place. In any such case, the Company will
make appropriate provision to insure that the provisions of this Paragraph 4 hereof will thereafter be applicable as nearly as
may be in relation to any shares of stock or securities thereafter deliverable upon the exercise of this Warrant. The Company will
not effect any consolidation, merger or sale or conveyance unless prior to the consummation thereof, the successor corporation
(if other than the Company) assumes by written instrument the obligations under this Paragraph 4 and the obligations to deliver
to the holder of this Warrant such shares of stock, securities or assets as, in accordance with the foregoing provisions, the holder
may be entitled to acquire.


 


(d)Distribution of Assets. In case the Company
shall declare or make any distribution of its assets (including cash) to holders of Common Stock as a partial liquidating dividend,
by way of return of capital or otherwise, then, after the date of record for determining shareholders entitled to such distribution,
but prior to the date of distribution, the holder of this Warrant shall be entitled upon exercise of this Warrant for the purchase
of any or all of the shares of Common Stock subject hereto, to receive the amount of such assets which would have been payable
to the holder had such holder been the holder of such shares of Common Stock on the record date for the determination of shareholders
entitled to such distribution.


(e)Notice of Adjustment. Upon the occurrence
of any event which requires any adjustment of the Exercise Price, then, and in each such case, the Company shall give notice thereof
to the holder of this Warrant, which notice shall state the Exercise Price resulting from such adjustment and the increase or decrease
in the number of Warrant Shares purchasable at such price upon exercise, setting forth in reasonable detail the method of calculation
and the facts upon which such calculation is based. Such calculation shall be certified by the Chief Financial Officer of the Company.


 


(f)Minimum Adjustment of Exercise Price. No adjustment
of the Exercise Price shall be made in an amount of less than 1% of the Exercise Price in effect at the time such adjustment is
otherwise required to be made, but any such lesser adjustment shall be carried forward and shall be made at the time and together
with the next subsequent adjustment which, together with any adjustments so carried forward, shall amount to not less than 1% of
such Exercise Price.


 


(g)No Fractional Shares. No fractional shares
of Common Stock are to be issued upon the exercise of this Warrant, but the Company shall round up the number of shares to the
issued.


 


(h)Other Notices. In case at any time:



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	 	(v)	the Company shall declare any dividend upon the Common Stock payable in shares of stock of any class or make any other distribution (including dividends or distributions payable in cash out of retained earnings) to the holders of the Common Stock;
	 	 	 
	 	(vi)	the Company shall offer for subscription pro rata to the holders of the Common Stock any additional shares of stock of any class or other rights;
	 	 	 
	 	(vii)	there shall be any capital reorganization of the Company, or reclassification of the Common Stock, or consolidation or merger of the Company with or into, or sale of all or substantially all its assets to, another corporation or entity; or
	 	 	 
	 	(viii)	there shall be a voluntary or involuntary dissolution, liquidation or winding up of the Company;


 


then, in each such case, the Company shall
give to the holder of this Warrant (a) notice of the date on which the books of the Company shall close or a record shall be taken
for determining the holders of Common Stock entitled to receive any such dividend, distribution, or subscription rights or for
determining the holders of Common Stock entitled to vote in respect of any such reorganization, reclassification, consolidation,
merger, sale, dissolution, liquidation or winding-up and (b) in the case of any such reorganization, reclassification, consolidation,
merger, sale, dissolution, liquidation or winding-up, notice of the date (or, if not then known, a reasonable approximation thereof
by the Company) when the same shall take place. Such notice shall also specify the date on which the holders of Common Stock shall
be entitled to receive such dividend, distribution, or subscription rights or to exchange their Common Stock for stock or other
securities or property deliverable upon such reorganization, reclassification, consolidation, merger, sale, dissolution, liquidation,
or winding-up, as the case may be. Such notice shall be given at least 30 days prior to the record date or the date on which the
Company’s books are closed in respect thereto. Failure to give any such notice or any defect therein shall not affect the
validity of the proceedings referred to in clauses (i), (ii), (iii) and (iv) above.


 


(i)Certain Events. If any event occurs of the
type contemplated by the adjustment provisions of this Paragraph 4 but not expressly provided for by such provisions, the Company
will give notice of such event as provided in Paragraph 4(g) hereof, and the Company’s Board of Directors will make an appropriate
adjustment in the Exercise Price and the number of shares of Common Stock acquirable upon exercise of this Warrant so that the
rights of the holder shall be neither enhanced nor diminished by such event.


 


		23.	Redemption.



 


As long as (i) there is then in effect a
registration statement with respect to the Shares, and (ii) the Market Price of the common stock of the Company is no less than
equal to 150% of the Exercise Price as adjusted from time to time, the Company shall have the right upon thirty days’ prior
written notice to the Holder (the “Redemption Notice”), to redeem this Warrant at $0.01 per share (the “Redemption
Price”). The Holder shall have the right to exercise this Warrant until the Redemption Date. As used herein the term
“Market Price” means the Closing Price of the Common Stock for the ten consecutive trading days ending on the
day immediately prior to the date the Redemption Notice is sent to the Holder. The date that this Warrant is redeemed by the Company
and the Redemption Price is paid to the Holder is herein referred to as the “Redemption Date.” The “Closing
Price” means the closing price of the Common Stock in the market where the Common Stock is then traded or quoted as reported
by a reliable reporting service.


 


		24.	Fractional Shares.



 


In lieu of issuance of a fractional share
upon any exercise hereunder, the Company will issue an additional whole share in lieu of that fractional share, calculated on the
basis of the Exercise Price.


 


		25.	Legends.



 


Prior to issuance of the shares of Common
Stock underlying this Warrant, all such certificates representing such shares shall bear a restrictive legend to the effect that
the Shares represented by such certificate have not been registered under the Securities Act, and that the Shares may not be sold
or transferred in the absence of such registration or an exemption therefrom, such legend to be substantially in the form of the
bold-face language appearing at the top of Page 1 of this Warrant.



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		26.	Disposition of Warrants or Shares; Legal Opinions.



 


(a)The Holder of this Warrant, each transferee hereof
and any holder and transferee of any Shares, by his or its acceptance thereof, agrees that no public distribution of Warrants or
Shares will be made in violation of the provisions of the Securities Act. Furthermore, it shall be a condition to the transfer
of this Warrant that any transferee thereof deliver to the Company his or its written agreement to accept and be bound by all of
the terms and conditions contained in this Warrant.


 


(b)In the event the holder of the Shares wishes to transfer
its Shares and such proposed transfer is in compliance with applicable exemptions from registration under the Securities Act and
other applicable laws, the Company will promptly instruct its legal counsel to issue, at the Company’s expense, a legal opinion
permitting such transfer without restrictive legend; provided however, that the holder delivers reasonably requested representations
in support of such opinion.


 


		27.	Merger or Consolidation.



 


The Company will not merge or consolidate
with or into any other corporation, or sell or otherwise transfer its property, assets and business substantially as an entirety
to another corporation, unless the corporation resulting from such merger or consolidation (if not the Company), or such transferee
corporation, as the case may be, shall expressly assume, by supplemental agreement reasonably satisfactory in form and substance
to the Holder, the due and punctual performance and observance of each and every covenant and condition of this Warrant to be performed
and observed by the Company.


 


		28.	Notices.



 


Except as otherwise specified herein to
the contrary, all notices, requests, demands and other communications required or desired to be given hereunder shall only be effective
if given in writing by certified or registered U.S. mail with return receipt requested and postage prepaid; by private overnight
delivery service (e.g. Federal Express); by facsimile transmission (if no original documents or instruments must accompany the
notice); or by personal delivery. Any such notice shall be deemed to have been given (a) on the business day immediately following
the mailing thereof, if mailed by certified or registered U.S. mail as specified above; (b) on the business day immediately following
deposit with a private overnight delivery service if sent by said service; (c) upon receipt of confirmation of transmission if
sent by facsimile transmission; or (d) upon personal delivery of the notice. All such notices shall be sent to the following addresses
(or to such other address or addresses as a party may have advised the other in the manner provided in this Section 10):


 


	 	If to the Company:	 
	 	 	 
	 	NDB Energy, Inc.	 
	 	10777 Westheimer Rd.	 
	 	Suite 1100	 
	 	Houston, Texas 77042	 
	 	Attention: James Cerna, Jr.,	 
	 	President and Chief Executive Officer	 
	 	Facsimile: []	 
	 	 	 
	 	If to the Holder:	 
	 	 	 
	 	________________________	 
	 	________________________	 
	 	________________________	 
	 	________________________	 


 






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Notwithstanding the time of effectiveness
of notices set forth in this Section 10, a Notice of Exercise shall not be deemed effectively given until it has been duly completed
and submitted to the Company together with this original Warrant and payment of the Exercise Price in a manner set forth in this
Section 10.


 


		29.	Limitation on Exercise.



 


Notwithstanding anything to the contrary
contained herein, the number of shares of Common Stock that may be acquired by the Holder upon any exercise of this Warrant (or
otherwise in respect hereof) shall be limited to the extent necessary to insure that, following such exercise (or other issuance),
the total number of shares of Common Stock then beneficially owned by such Holder and its affiliates and any other persons whose
beneficial ownership of Common Stock would be aggregated with the Holder’s for purposes of Section 13(d) of the Exchange
Act, does not exceed 4.99% of the total number of issued and outstanding shares of Common Stock (including for such purpose the
shares of Common Stock issuable upon such exercise). For such purposes, beneficial ownership shall be determined in accordance
with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder. The holder may waive the restriction
in whole or in part upon and effective after 61 days prior written notice to the Company to change the beneficial ownership to
9.99%, but not in excess thereof. This provision shall not restrict the number of shares of Common Stock which a Holder may receive
or beneficially own in order to determine the amount of securities or other consideration that such Holder may receive in the event
of a merger or other business combination or reclassification involving the Company.


 


Holder hereby acknowledges and agrees that,
notwithstanding anything herein to the contrary, this Warrant may not be exercised unless and until the Holder receives notice
from the Company, following delivery of a Notice of Exercise by the Holder, that the aggregate number of shares of Common Stock
issuable upon exercise of all of the Company stock purchase warrants designated as Series C Warrants (the “Series C Warrants”)
and all other warrants issued by the Company pursuant to the SEA (whether or not such other warrants are being exercised), together
with the shares of Common Stock issued by the Company as part of the Merger Consideration pursuant to the share exchange agreement
entered into between the Company, Armada and the stockholders of Armada. will not constitute more than 49.90% of the Company’s
total number of shares of Common Stock issued and outstanding at the time of exercise (the “Exercise Limitation”).
For purposes of this subsection, the percentage shall be calculated in accordance with Rule 13d-3 under the Securities Exchange
Act of 1934, as amended. The determination whether or not the Exercise Limitation applies shall be made at the sole discretion
of the Company.


 


Notwithstanding anything herein to the contrary,
in the event Holder is unable to exercise this Warrant because of the Exercise Limitation, any right of redemption the Company
otherwise has pursuant to this Warrant shall be suspended until such time as the Holder may fully exercise the Warrant.


 


		30.	Governing Law.



 


This Agreement shall be governed by and
construed solely and exclusively in accordance with and pursuant to the internal laws of the State of Nevada without regard to
the conflicts of laws principles thereof. The parties hereto hereby expressly and irrevocably agree that any suit or proceeding
arising directly and/or indirectly pursuant to or under this Agreement shall be brought solely in a federal or state court located
in the City of Las Vegas. By its execution hereof, the parties hereby covenant and irrevocably submit to the in personam jurisdiction
of the federal and state courts located in the City of Las Vegas, Nevada and agree that any process in any such action may be served
upon any of them personally, or by certified mail or registered mail upon them or their agent, return receipt requested, with the
same full force and effect as if personally served upon them in Las Vegas. The parties hereto expressly and irrevocably waive any
claim that any such jurisdiction is not a convenient forum for any such suit or proceeding and any defense or lack of in personam
jurisdiction with respect thereto. In the event of any such action or proceeding, the party prevailing therein shall be entitled
to payment from the other party hereto of all of its reasonable counsel fees and disbursements.


 


		31.	Successors and Assigns.



 


This Warrant shall be binding upon and shall
inure to the benefit of the parties hereto and their respective successors and assigns.



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		32.	Headings.



 


The headings of various sections of this
Warrant have been inserted for reference only and shall not affect the meaning or construction of any of the provisions hereof.






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		33.	
Severability.



 


If any provision of this Warrant is held
to be unenforceable under applicable law, such provision shall be excluded from this Warrant, and the balance hereof shall be interpreted
as if such provision were so excluded.


 


		34.	Modification and Waiver.



 


This Warrant and any provision hereof may
be amended, waived, discharged or terminated only by an instrument in writing signed by the Company and the Holder.


 


		35.	Specific Enforcement.



 


The Company and the Holder acknowledge and
agree that irreparable damage would occur in the event that any of the provisions of this Warrant were not performed in accordance
with their specific terms or were otherwise breached. It is accordingly agreed that the parties shall be entitled to an injunction
or injunctions to prevent or cure breaches of the provisions of this Warrant and to enforce specifically the terms and provisions
hereof, this being in addition to any other remedy to which either of them may be entitled by law or equity.


 


		36.	Assignment.



 


This Warrant may be transferred or assigned,
in whole or in part, at any time and from time to time by the then Holder by submitting this Warrant to the Company together with
a duly executed Assignment in substantially the form and substance of the Form of Assignment which accompanies this Warrant as
Exhibit B hereto, and, upon the Company’s receipt thereof, and in any event, within five (5) business days thereafter, the
Company shall issue a Warrant to the Holder to evidence that portion of this Warrant, if any as shall not have been so transferred
or assigned.


 


(Signature Page Immediately Follows)






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IN WITNESS WHEREOF, the Company has
caused this Warrant to be duly executed, manually or by facsimile, by one of its officers thereunto duly authorized.


 


Date: __________________, 2012


 


NDB ENERGY, INC.


 


By: ______________________


Name:


Title: