Rafter Demon is a common Creature — Demon card from Ravnica Allegiance (RNA), collector number 196. Current market price: $0.08 (foil $0.35), TCGplayer market prices via Scryfall.
Spectacle {3}{B}{R} (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.) When this creature enters, if its spectacle cost was paid, each opponent discards a card.