Captain Howler, Sea Scourge is a rare Legendary Creature — Shark Pirate card from Aetherdrift (DFT), collector number 475. Current market price: — (foil $10.73), TCGplayer market prices via Scryfall.
Ward—{2}, Pay 2 life. Whenever you discard one or more cards, target creature gets +2/+0 until end of turn for each card discarded this way. Whenever that creature deals combat damage to a player this turn, you draw a card.