息せぬ群れ

息せぬ群れは、あなたがコントロールする他のゾンビ１体およびあなたの墓地にあるゾンビ・カード１枚につき、＋１/＋１カウンターが１個置かれた状態で戦場に出る。
息せぬ群れにダメージが与えられるなら、そのダメージを軽減し、それの上から＋１/＋１カウンターを１個取り除く。

Unbreathing Horde

Unbreathing Horde enters with a +1/+1 counter on it for each other Zombie you control and each Zombie card in your graveyard.
If Unbreathing Horde would be dealt damage, prevent that damage and remove a +1/+1 counter from it.

Starter Commander Decks

Duel Decks: Blessed vs. Cursed

Unbreathing Horde enters the battlefield with a +1/+1 counter on it for each other Zombie you control and each Zombie card in your graveyard.
If Unbreathing Horde would be dealt damage, prevent that damage and remove a +1/+1 counter from it.

Innistrad

If Unbreathing Horde enters from a graveyard, it will count itself when determining how many +1/+1 counters it enters with.

If Unbreathing Horde has no +1/+1 counters on it (but its toughness is raised above 0 by another effect), any damage dealt to it will still be prevented, even though no counter will be removed.

Only one +1/+1 counter will be removed, no matter how much damage is prevented.