Vagorath, Necropolis Thief

Zombies can't attack you or block Vagorath, Necropolis Thief.
Whenever Vagorath, Necropolis Thief deals
combat damage to an opponent, you may have
that player return a creature card from their
graveyard to the battlefield. If you do, that
creature is a black Zombie in addition to its other
colors and types and you draw cards and gain life
equal to its power.