結界
喪心~在每個結束步驟開始時,若本回合中有生物死去,則你可以抽一張牌。
If a creature didn't die before a turn's end step begins, Deathreap Ritual's ability doesn't trigger at all. The creature may have died before Deathreap Ritual entered the battlefield, however.
You draw one card when the ability resolves, not one card per creature that died during the turn.