Fathom Fleet Captain is a rare Creature — Human Pirate card from Ixalan Promos (PXLN), collector number 106p. Current market price: $1.79 (foil $1.18), TCGplayer market prices via Scryfall.
Menace Whenever this creature attacks, if you control another nontoken Pirate, you may pay {2}. If you do, create a 2/2 black Pirate creature token with menace.