Treacherous Greed is a rare Instant card from Murders at Karlov Manor Promos (PMKM), collector number 237p. Current market price: $0.34 (foil $0.50), TCGplayer market prices via Scryfall.
As an additional cost to cast this spell, sacrifice a creature that dealt damage this turn. Draw three cards. Each opponent loses 3 life and you gain 3 life.