Excalibur II is a rare Legendary Artifact — Equipment card from Final Fantasy Promos (PFIN), collector number 257s. Current market price: — (foil $5.67), TCGplayer market prices via Scryfall.
Whenever you gain life, put a charge counter on Excalibur II. Equipped creature gets +1/+1 for each charge counter on Excalibur II. Equip {3}