Chains of Custody is a common Enchantment — Aura card from Secrets of Strixhaven Commander (SOC), collector number 139. Current market price: $0.27, TCGplayer market prices via Scryfall.
Enchant creature you control When this Aura enters, exile target nonland permanent an opponent controls until this Aura leaves the battlefield. Enchanted creature has ward {2}. (Whenever it becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)