巫術
犧牲一個生物,以作為施放膿水爆發的額外費用。
所有生物得-X/-X直到回合結束,X為所犧牲之生物的力量。
X is the power of the sacrificed creature as it last existed on the battlefield.
You must sacrifice exactly one creature to cast this spell; you cannot cast it without sacrificing a creature, and you cannot sacrifice additional creatures.
Players can only respond once this spell has been cast and all its costs have been paid. No one can try to destroy the creature you sacrificed to prevent you from casting this spell.