Ob Nixilis, Unleashed

+1: Sacrifice a creature you own and discard a card. You draw two cards and target opponent discards their hand and draws five cards.
0: Ob Nixilis, Unleashed becomes a 12/12 red and black demon with flying, deathtouch, and trample until end of turn. It is still a planeswalker.
-20: Destroy all nonbasic lands, enchantments, artifacts, and multi-color cards opponents control. Draw 2 cards and gain 5 life.