Malcolm, Keen-Eyed Navigator is a uncommon Legendary Creature — Siren Pirate card from The Lost Caverns of Ixalan Commander (LCC), collector number 161. Current market price: $0.29, TCGplayer market prices via Scryfall.
Flying Whenever one or more Pirates you control deal damage to your opponents, you create a Treasure token for each opponent dealt damage. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.") Partner (You can have two commanders if both have partner.)