Undead Alchemist

If a Zombie you control would deal combat damage to a player, instead that player mills that many cards.
Whenever a creature card is put into an opponent's graveyard from their library, exile that card and create a 2/2 black Zombie creature token.

If a Zombie you control would deal combat damage to a player, instead that player puts that many cards from the top of his or her library into his or her graveyard.
Whenever a creature card is put into an opponent's graveyard from his or her library, exile that card and put a 2/2 black Zombie creature token onto the battlefield.