Market Price
Raw
$0.07
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Card Details
If three or more creatures are attacking, you may pay 
rather than pay this spell's mana cost.
Attacking creatures get -3/-0 until end of turn.
“Suddenly, Zurdi didn't care about treasure, glory, food . . . or the drakes circling above.”
Illustrated by Anthony Francisco
Rulings (3)
Oct 1, 2009
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.
Oct 1, 2009
Effects that increase or reduce the cost to cast a Trap will apply to whichever cost you chose to pay.
Oct 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.