Drosi, The Betrayal

+2: Sacrifice a creature, if you do, destroy target creature an opponent controls. Creatures you control gain haste until end of turn.
-8: You gain an emblem with "Whenever a creature attacks you, that creature's controller sacrifices it at the end of combat."
: As long as your devotion to white, red and black is less than eight, you can't activate any of Drosi's abilities and he can't be attacked.