Squall, Gunblade Duelist is a rare Legendary Creature — Human Mercenary card from Final Fantasy Commander (FIC), collector number 453. Current market price: $4.73 (foil $4.97), TCGplayer market prices via Scryfall.
First strike As Squall enters, choose a number. Whenever one or more creatures attack one of your opponents, if any of those creatures have power or toughness equal to the chosen number, Squall deals damage equal to its power to defending player.