Lightning, Army of One is a mythic Legendary Creature — Human Soldier card from Final Fantasy Promos (PFIN), collector number 233s. Current market price: — (foil $41.38), TCGplayer market prices via Scryfall.
First strike, trample, lifelink Stagger — Whenever Lightning deals combat damage to a player, until your next turn, if a source would deal damage to that player or a permanent that player controls, it deals double that damage instead.