Chains of Custody

Mana cost: {2}{W}
Type: Enchantment — Aura
Set: Secrets of Strixhaven Commander #139 (common)
Price: $0.29 USD

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}.)

Chains of Custody has 3 printings, first in Jumpstart 2022 (2022). EDHREC ranks it #5,174 among Commander cards. It appears most in Light-Paws, Emperor's Voice decks (6,392 on EDHREC). 1 public deck on TCG runs it. It has 4 official rulings.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: legal
modern: not legal
pioneer: not legal
standard: not legal
brawl: legal

Public decks that run Chains of Custody

Silverquill Influence - Secrets of Strixhaven, led by Killian, Decisive Mentor

Commanders that run Chains of Custody most

Deck counts from EDHREC.

Light-Paws, Emperor's Voice: 6,392 decks
Killian, Decisive Mentor: 6,121 decks
Three Dog, Galaxy News DJ: 1,900 decks
Arna Kennerüd, Skycaptain: 1,588 decks
Killian, Ink Duelist: 1,439 decks
Pearl-Ear, Imperial Advisor: 987 decks
Bruna, Light of Alabaster: 731 decks
Yenna, Redtooth Regent: 483 decks

Often played with Chains of Custody

Cards that show up in the same decks on EDHREC.

Rulings

2022-12-02: If a token is exiled this way, it will cease to exist and won't return to the battlefield.
2022-12-02: If an Aura is exiled this way, its owner chooses what it will enchant as it returns to the battlefield. An Aura put onto the battlefield this way doesn't target anything (so it could be attached to a permanent with shroud, for example), but the Aura's enchant ability restricts what it can be attached to. If the Aura can't legally be attached to anything, it remains in exile for the rest of the game.
2022-12-02: If Chains of Custody leaves the battlefield before its second ability resolves, the target permanent won't be exiled.
2022-12-02: Auras attached to the exiled permanent will be put into their owners' graveyards. Any Equipment will become unattached and remain on the battlefield. Any counters on the exiled permanent will cease to exist. When the card returns to the battlefield, it will be a new object with no connection to the card that was exiled.