Azax-Azog, the Demon Thane

When you cast this spell, exile all cards in target player's graveyard.
Menace, toxic 2
{1}{w}{b}, Sacrifice another creature: Put two
-1/-1 counters on up to one target creature.
{3}{b}{r}, {t}, Sacrifice another creature or artifact: Put two -1/-1 counters on up to one target creature, then proliferate.