Summoning Trap

Instant - Trap, 4GG (6)
If a creature spell you cast this turn was countered by a spell or ability an opponent controlled, you may pay {0} 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.
Illus. Kieran Yanner

Gatherer Card Rulings [Nov 2009]

• 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.

Format Legality	Legal in Vintage, Legacy, Extended, Standard Banned in MTGO Classic
Printings (1/9)	Zendikar (Rare)