Murmuk, Dredgescape Raiser

Whenever a Swamp enters the battlefield under your control, you may have it enter the battlefield tapped. If you do, create a 2/2 black Zombie creature token.
At the beginning of your end step, you may pay 2 life. If you do, search your library for a Swamp, put it into your hand, then shuffle your library.
"Those who try to stop me will only join my ranks in the swamps."