The Planar Gate

{5}, {t}: Look at the top five cards of your library.
You may reveal a creature from among them and
put it into your graveyard. If you do, create a
token that's a copy of that creature, except its a
4/4 black zombie creature token in addition to its
other creature types. The token has no mana cost.
Now march, my minions. We have a plane to destroy.
—Nicol Bolas