Creature — Zombie 2/2, 3B (4)
Common
When Gravedigger enters the battlefield, you may return target creature card from your graveyard to your hand.
Oddly, no one questioned the Cabal's wisdom in hiring a zombie to work at the cemetery.
Illus. Dermot Power

10/1/2009: A "creature card" is any card with the type Creature, even if it has other types such as Artifact, Enchantment, or Land. Older cards of type Summon are also Creature cards.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Extended (Type 1.X)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern