ソーサリー
山1つを対象とし、それを破壊する。峰の噴火はその土地のコントローラーに3点のダメージを与える。
If the target Mountain is an illegal target when Peak Eruption tries to resolve, it won't resolve and none of its effects will happen. No damage will be dealt. However, if Peak Eruption resolves and the Mountain isn't destroyed (perhaps because it has indestructible), damage will be dealt.