Arabella, Abandoned Doll is a uncommon Legendary Artifact Creature — Toy card from Duskmourn: House of Horror (DSK), collector number 208. Current market price: $0.63 (foil $0.91), TCGplayer market prices via Scryfall.
Whenever Arabella attacks, it deals X damage to each opponent and you gain X life, where X is the number of creatures you control with power 2 or less.