Dauthi Voidwalker 176 (Commander: Tarkir: Dragonstorm)

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 this creature: Choose an exiled card an opponent owns with a void counter on it. You may play it this turn without paying its mana cost.

NM - $11.10
LP - $8.90
MP - $6.70
HP - $4.50
DMG - $2.30