Corpse King Reagalas

When Corpse King Reagalas enters the battlefield,
you may return upto two land cards from your
graveyard to your hand.
Discard a land card, exile a creature card
from your graveyard: Create a 2/2 white and black
Zombie Soldeir creature token. You gain 1 life.
Sacrifice three lands: return Corpse
King Reagalas to the battlefield tapped.