Hoard Robber is a common Creature — Tiefling Rogue card from Adventures in the Forgotten Realms (AFR), collector number 110. Current market price: $0.26 (foil $0.31), TCGplayer market prices via Scryfall.
Whenever this creature deals combat damage to a player, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")