Zarox, Liliana's Chosen

Deathtouch
Zarox, Liliana's Chosen's toughness is equal to
the amount of black creature on the battlefield.
Whenever Zarox, Liliana's Chosen is put into
your graveyard, you may exile a black creature
with power 3 or greater. If you do, return Zarox, Liliana's Chosen to your hand.
Strength in numbers.