Temporary Lockdown — ruling 1

Temporary 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.

Temporary Lockdown — ruling 2

If Temporary Lockdown leaves the battlefield before its enters-the-battlefield ability resolves, no permanents will be exiled.

Temporary Lockdown — ruling 3

Auras 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.

Temporary Lockdown — ruling 4

Aura 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.

Temporary Lockdown — ruling 5

If 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.

Temporary Lockdown — ruling 6

In 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.

Temporary Lockdown : règles, fonctionnement et interactions (MTG)

Temporary Lockdown is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

When this enchantment enters, exile each nonland permanent with mana value 2 or less until this enchantment leaves the battlefield.

How it works : Temporary Lockdown

Original English text — Wizards of the Coast / Scryfall

#1September 9, 2022· Wizards of the Coast
Temporary 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.
No other card is named in this ruling.
#2September 9, 2022· Wizards of the Coast
If Temporary Lockdown leaves the battlefield before its enters-the-battlefield ability resolves, no permanents will be exiled.
No other card is named in this ruling.
#3September 9, 2022· Wizards of the Coast
Auras 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.
No other card is named in this ruling.
#4September 9, 2022· Wizards of the Coast
Aura 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.
No other card is named in this ruling.
#5September 9, 2022· Wizards of the Coast
If 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.
No other card is named in this ruling.
#6September 9, 2022· Wizards of the Coast
In 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.
No other card is named in this ruling.