Pitiless Plunderer is a uncommon Creature — Human Pirate card from Rivals of Ixalan (RIX), collector number 81. Current market price: $4.28 (foil $14.38), 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.")