Faith's Fetters is a common Enchantment — Aura card from Ravnica: City of Guilds (RAV), collector number 16. Current market price: $0.06 (foil $0.64), TCGplayer market prices via Scryfall.
Enchant permanent When this Aura enters, you gain 4 life. Enchanted permanent can't attack or block, and its activated abilities can't be activated unless they're mana abilities.