Arbiter of Woe is a uncommon Creature — Demon card from Foundations (FDN), collector number 55. Current market price: $0.24 (foil $0.36), TCGplayer market prices via Scryfall.
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.