Piggy Bank is a uncommon Artifact Creature — Boar Toy card from Duskmourn: House of Horror (DSK), collector number 148. Current market price: $0.24 (foil $0.29), TCGplayer market prices via Scryfall.
When this creature dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")