Vaxathus, God of Defeat

Flying, trample, indestructable
As long as your devotion to red or black is greater than eight, Vaxathus, God of Defeat isn't a creature.
When a creature enters the battlefield under an opponents control, clash with that player. If you win the clash, choose one; put five -1/-1 counters on that creature; or put five +1/+1 counters on another target creature. If you lose, sacrifice a creature or discard a card.