死鳴らし鬼

瞬速
この呪文を唱えるためのコストは、このターンに死亡したクリーチャー１体につき{2}少なくなる。
死鳴らし鬼が戦場に出たとき、このターンにダメージを受けていてこれでないすべてのクリーチャーを破壊する。

撼亡邪鬼

闪现
本回合中每有一个生物死去，此咒语便减少{2}来施放。
当撼亡邪鬼进战场时，消灭所有本回合中受过伤害的其他生物。

Death-Rattle Oni

Flash
This spell costs {2} less to cast for each creature that died this turn.
When Death-Rattle Oni enters, destroy all other creatures that were dealt damage this turn.

March of the Machine: The Aftermath

Flash
This spell costs {2} less to cast for each creature that died this turn.
When Death-Rattle Oni enters the battlefield, destroy all other creatures that were dealt damage this turn.

The cost-reduction ability of Death-Rattle Oni doesn't change its mana cost or mana value, only the total cost you pay. Specifically, Death-Rattle Oni's mana value is always 7.

Count any creature that died during the turn, including token creatures, when calculating the cost reduction. For nontoken creatures that died, it doesn't matter what happened to the creature cards after they died.