Wurm of Decay

Trample, Ward {3}
Wurm of Decay enters the battlefield with a
+1/+1 counter on it for each Zombie creature
card in your graveyard.
Whenever a creature you control deals combat
damage to a player, each player reveals that many
cards from the top of their library then puts all
non-Zombie cards into his or her graveyard, put
the rest into your hand.