Eternal Nightmare

Target opponent reveals cards from the top
of his or her library until four land cards are
revealed. That player puts all cards revealed
this way into his or her graveyard.
Amass X, where X is the number of cards
put into the graveyard this way. (Put X +1/+1
counters on an Army you control. If you don't
control one, create a 0/0 black Zombie Army
creature token first.)