Ob Nixilis, the Adversary is a mythic Legendary Planeswalker — Nixilis card from Magic: The Gathering (Magic Online Promos, PRM).
Mythic
Magic Online Promos (PRM)
{1}{B}{R}
Mana Value
3
Colors
B
R
Card Text
Casualty X. The copy isn't legendary and has starting loyalty X. (As you cast this spell, you may sacrifice a creature with power X. When you do, copy this spell. The copy becomes a token.)
+1: Each opponent loses 2 life unless they discard a card. If you control a Demon or Devil, you gain 2 life.
−2: Create a 1/1 red Devil creature token with "When this token dies, it deals 1 damage to any target."
−7: Target player draws seven cards and loses 7 life.
