Summoning Trap
Zendikar — Rare
Instant — Trap
Summoning Trap rulings:
2009-10-01: 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.
2009-10-01: Casting a Trap by paying its alternative cost doesn't change its mana cost or mana value. The only difference is the cost you actually pay.
2009-10-01: Effects that increase or reduce the cost to cast a Trap will apply to whichever cost you chose to pay.
2009-10-01: If there are seven or fewer cards in your library, you'll look at all of them.