Cheapest priced copy (Starter Commander Decks): $0.79 at Card Kingdom, near mint, out of stock, their price list as of .
Unbreathing Horde 
Creature — Zombie · 0/0 · Rare · Innistrad · #121
This creature enters with a +1/+1 counter on it for each other Zombie you control and each Zombie card in your graveyard.
If this creature would be dealt damage, prevent that damage and remove a +1/+1 counter from it.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $0.79 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duel Decks: Blessed vs. Cursed | 66 | Rare | $1.29Out of stock | — |
| Innistrad | 121 | Rare | $1.29Out of stock | $2.99 |
| Starter Commander Decks | 113 | Rare | $0.79Out of stock | — |
3 rulings from Wizards of the Coast
- 22 September 2011Only one +1/+1 counter will be removed, no matter how much damage is prevented.
- 22 September 2011If Unbreathing Horde enters from a graveyard, it will count itself when determining how many +1/+1 counters it enters with.
- 22 September 2011If 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.