Each player mills X cards. For each creature card put into a graveyard this way, you create a tapped 2/2 black Zombie creature token. (To mill a card, a player puts the top card of their library into their graveyard.)
Each player puts the top X cards of his or her library into his or her graveyard. For each creature card put into a graveyard this way, you put a 2/2 black Zombie creature token onto the battlefield tapped.
"Did you have a nice nap?"
—Liliana Vess