Charmbreaker Devils is a rare Creature — Devil card from Jumpstart (JMP), collector number 303. Current market price: $0.28, TCGplayer market prices via Scryfall.
At the beginning of your upkeep, return an instant or sorcery card at random from your graveyard to your hand. Whenever you cast an instant or sorcery spell, this creature gets +4/+0 until end of turn.