Dire Fleet Warmonger is a uncommon Creature — Orc Pirate card from Core Set 2021 (M21), collector number 217. Current market price: $0.24 (foil $0.25), TCGplayer market prices via Scryfall.
At the beginning of combat on your turn, you may sacrifice another creature. If you do, this creature gets +2/+2 and gains trample until end of turn. (It can deal excess combat damage to the player or planeswalker it's attacking.)