집중마법
모든 생물은 턴종료까지 당신이 조종하는 늪 한 개당 -1/-1을 받는다.
The effect is based on the number of Swamps you control when Mutilate resolves. Only creatures on the battlefield at that time will be affected. The effect won't change later in the turn, even if the number of Swamps you control changes.