Fell Flagship is a rare Artifact — Vehicle card from Ixalan (XLN), collector number 238. Current market price: $0.36 (foil $1.31), TCGplayer market prices via Scryfall.
Pirates you control get +1/+0. Whenever this Vehicle deals combat damage to a player, that player discards a card. Crew 3 (Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.)