Admiral Beckett Brass is a mythic Legendary Creature — Human Pirate card from Secret Lair Drop (SLD), collector number 1410. Current market price: $6.22, 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.