Cheapest priced copy (Dominaria United): $0.49 at Card Kingdom, near mint, their price list as of .
Temporary Lockdown 
Enchantment · Rare · Dominaria United Promos · #36p
When this enchantment enters, exile each nonland permanent with mana value 2 or less until this enchantment leaves the battlefield.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $0.49 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Dominaria United | 36 | Rare | $0.49 | $0.49 |
| Dominaria United | 389 | Rare | $0.59 | $0.79 |
| Dominaria United Promos | 36p | Rare | $0.99 | $2.99 |
| Dominaria United Promos | 36s | Rare | — | $0.99 |
6 rulings from Wizards of the Coast
- 9 September 2022Auras with mana value 3 or greater attached to an exiled permanent will be put into their owners’ graveyards. Equipment with mana value 3 or greater attached to an exiled creature will become unattached and remain on the battlefield. Any counters on the exiled permanent will cease to exist.
- 9 September 2022In a multiplayer game, if Temporary Lockdown’s owner leaves the game, the exiled cards will return to the battlefield. Because the one-shot effect that returns the cards isn’t an ability that goes on the stack, it won’t cease to exist along with the leaving player’s spells and abilities on the stack.
- 9 September 2022If a token is exiled, it ceases to exist. It won’t be returned to the battlefield. The mana value of a token that isn’t a copy of another permanent is always 0.
- 9 September 2022Aura cards exiled this way will return to the battlefield attached to a permanent that they could enchant (based on their enchant ability) chosen by their owner. They cannot enchant any permanents that are entering the battlefield at the same time.
- 9 September 2022If Temporary Lockdown leaves the battlefield before its enters-the-battlefield ability resolves, no permanents will be exiled.
- 9 September 2022Temporary Lockdown’s ability is a single ability that creates two one-shot effects: one that exiles the permanents when the ability resolves, and another that returns the exiled cards to the battlefield immediately after Temporary Lockdown leaves the battlefield.