Faith Unbroken is a uncommon Enchantment — Aura card from Eldritch Moon (EMN), collector number 24. Current market price: $0.09 (foil $0.31), TCGplayer market prices via Scryfall.
Enchant creature you control When this Aura enters, exile target creature an opponent controls until this Aura leaves the battlefield. Enchanted creature gets +2/+2.