Instant — Trap (CMC:6)
If a creature spell you cast this turn was countered by a spell or ability an opponent controlled, you may pay rather than pay Summoning Trap's mana cost. Look at the top seven cards of your library. You may put a creature card from among them onto the battlefield. Put the rest on the bottom of your library in any order.
139 MM3 • ENKieran Yanner
™ & © 1993— Wizards of the Coast
Notes: TODO: Update Copyright
Legal in: Modern,Zendikar Block,Legacy,Vintage,Freeform,Prismatic,Tribal Wars Legacy,Classic,Singleton 100,Commander
Oracle Text (click to copy):
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10/1/2009 You may ignore a Trap's alternative cost condition and simply cast it for its normal mana cost. This is true even if its alternative cost condition has been met. 10/1/2009 Casting a Trap by paying its alternative cost doesn't change its mana cost or converted mana cost. The only difference is the cost you actually pay. 10/1/2009 Effects that increase or reduce the cost to cast a Trap will apply to whichever cost you chose to pay. 10/1/2009 If there are seven or fewer cards in your library, you'll look at all of them.