White Mage's Staff is a common Artifact — Equipment card from Final Fantasy (FIN), collector number 42. Current market price: $0.16 (foil $0.30), TCGplayer market prices via Scryfall.
Job select (When this Equipment enters, create a 1/1 colorless Hero creature token, then attach this to it.) Equipped creature gets +1/+1, has "Whenever this creature attacks, you gain 1 life," and is a Cleric in addition to its other types. Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.)