마법물체
어느 플레이어가 흑색 주문을 발동할 때마다, 당신은 생명 1점을 얻을 수 있다.
The ability triggers whenever any player, not just you, casts a black spell.
If a player casts a black spell, Demon’s Horn’s ability triggers and is put on the stack on top of that spell. Demon’s Horn’s ability will resolve (causing you to gain 1 life) before the spell does.