Fractured Loyalty is a uncommon Enchantment — Aura card from Mirrodin (MRD), collector number 93. Current market price: $0.23 (foil $0.39), TCGplayer market prices via Scryfall.
Enchant creature Whenever enchanted creature becomes the target of a spell or ability, that spell or ability's controller gains control of that creature. (This effect lasts indefinitely.)