Cheapest priced copy (Coldsnap): $0.79 at Card Kingdom, near mint, their price list as of .
Void Maw 
Creature — Horror · 4/5 · Rare · Coldsnap · #74
Trample
If another creature would die, exile it instead.
Put a card exiled with this creature into its owner's graveyard: This creature gets +2/+2 until end of turn.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.79 to $6.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Coldsnap | 74 | Rare | $0.79 | $6.99 |
2 rulings from Wizards of the Coast
- 15 July 2006If Void Maw and another creature would be put into the graveyard from the battlefield at the same time, Void Maw is put into your graveyard and the other creature is exiled.
- 1 June 2011Cards exiled with Void Maw that would go to the graveyard but have that replaced by an effect such as Leyline of the Void are considered new objects. They can not be used to activate Void Maw's ability again.