Seymour Flux is a rare Legendary Creature — Spirit Avatar card from Final Fantasy (FIN), collector number 452. Current market price: $2.24 (foil $14.65), TCGplayer market prices via Scryfall.
At the beginning of your upkeep, you may pay 1 life. If you do, draw a card and put a +1/+1 counter on Seymour Flux.