Cheapest priced copy (Jumpstart 2022): $0.35 at Card Kingdom, near mint, their price list as of .
Chains of Custody 
Enchantment — Aura · Common · Secrets of Strixhaven Commander · #139
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}.)
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
3 printings · $0.35 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Jumpstart 2022 | 3 | Common | $0.35 | — |
| Foundations Jumpstart | 180 | Common | $0.35 | — |
| Secrets of Strixhaven Commander | 139 | Common | $0.35 | — |
4 rulings from Wizards of the Coast
- 2 December 2022If a token is exiled this way, it will cease to exist and won't return to the battlefield.
- 2 December 2022If 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.
- 2 December 2022If Chains of Custody leaves the battlefield before its second ability resolves, the target permanent won't be exiled.
- 2 December 2022Auras 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.