Brand, Shadow Incarnate

X: Sacrifice X permanents, lose X life, draw X cards, and deal X damage to target creature.
0: Until end of turn, Brand, Shadow Incarnate becomes a 3/2 Human Horror with Hexproof, Menace, Deathtouch, and First strike.
-X: Destroy X target creatures, then deal X damage to all creatures, players, and planeswalkers. Each player discards X cards.