Pitiless Plunderer is a uncommon Creature — Human Pirate card from Fallout (PIP), collector number 187. Current market price: $3.70 (foil $13.85), TCGplayer market prices via Scryfall.
Whenever another creature you control dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")