Paladin's Arms is a common Artifact — Equipment card from Final Fantasy (FIN), collector number 28. Current market price: $0.20 (foil $0.33), 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 +2/+1, has ward {1}, and is a Knight in addition to its other types. Lightbringer and Hero's Shield — Equip {4} ({4}: Attach to target creature you control. Equip only as a sorcery.)