Admiral Beckett Brass is a mythic Legendary Creature — Human Pirate card from Ixalan Promos (PXLN), collector number 217s. Current market price: — (foil $3.98), TCGplayer market prices via Scryfall.
Other Pirates you control get +1/+1. At the beginning of your end step, gain control of target nonland permanent controlled by a player who was dealt combat damage by three or more Pirates this turn.