Freddy Krueger, Dreamwalker

Shadow (This creature can block or be blocked by
only creatures with shadow.)
If a card would be put into an opponent's graveyard
from anywhere, instead exile it with a void counter
on it.
{t}, Sacrifice Freddy Krueger, Dreamwalker:
Choose an exiled card an opponent owns with a void counter on it. You may play it this turn without
paying its mana cost.