Axus, Slayer of the Living

When Axus enters the battlefield, it deals 3 damage to creatures you don't control.
{2}: Fight with target creature. If it dies, you gain control of it with 2 soul counters.
{3}{r}{r}: Deals 8 damage to target creature that's not black.
{8}, sacrifice Axus: You gain life equal other total combined mana cost of the creatures you killed.