Arbiter of Woe 
Creature — Demon
As an additional cost to cast this spell, sacrifice a creature. Flying When this creature enters, each opponent discards a card and loses 2 life. You draw a card and gain 2 life.
Legality
standardLEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL