命知らず

命知らずを唱えるための追加コストとして、クリーチャーを１体生け贄に捧げる。
クリーチャー１体かプレイヤー１人を対象とする。命知らずはそれに４点のダメージを与える。

Reckless Abandon

As an additional cost to cast this spell, sacrifice a creature.
Reckless Abandon deals 4 damage to any target.

The List

Duel Decks: Speed vs. Cunning

As an additional cost to cast Reckless Abandon, sacrifice a creature.
Reckless Abandon deals 4 damage to target creature or player.

Urza's Destiny

As an additional cost to play Reckless Abandon, sacrifice a creature.
Reckless Abandon deals 4 damage to target creature or player.

Players can only respond once this spell has been cast and all its costs have been paid. No one can try to destroy the creature you sacrificed to prevent you from casting this spell.

You must sacrifice exactly one creature to cast this spell; you cannot cast it without sacrificing a creature, and you cannot sacrifice additional creatures.