Pitfall Trap | Magic: The Gathering
Formats Pitfall Trap is Legal in
Official Oracle Text for Pitfall Trap
Destroy target attacking creature without flying.
Official Rulings for Pitfall Trap
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.