Quarantine Field — ruling 1

Use the number of isolation counters on Quarantine Field as its triggered ability is put on the stack to determine how many targets you may choose. Once the targets are chosen, the number of targets the ability has is locked in. Changing the number of isolation counters on Quarantine Field won’t change how many nonland permanents are exiled.

Quarantine Field — ruling 2

If Quarantine Field exiles multiple permanents, those cards all return to the battlefield at the same time.

Quarantine Field — ruling 3

If Quarantine Field leaves the battlefield before its triggered ability resolves, no permanents will be exiled.

Quarantine Field — ruling 4

Auras attached to the exiled permanents will be put into their owners’ graveyards. Equipment attached to the exiled creatures will become unattached and remain on the battlefield. Any counters on the exiled permanents will cease to exist.

Quarantine Field — ruling 5

If a token is exiled, it ceases to exist. It won’t be returned to the battlefield.

Quarantine Field — ruling 6

The exiled cards return to the battlefield immediately after Quarantine Field leaves the battlefield. Nothing happens between the two events, including state-based actions.

Quarantine Field — ruling 7

In a multiplayer game, if Quarantine Field’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.

Quarantine Field : règles, fonctionnement et interactions (MTG)

Quarantine Field 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

This enchantment enters with X isolation counters on it. When this enchantment enters, for each isolation counter on it, exile up to one target nonland permanent an opponent controls until this enchantment leaves the battlefield.

How it works : Quarantine Field

Original English text — Wizards of the Coast / Scryfall

#1August 25, 2015· Wizards of the Coast
Use the number of isolation counters on Quarantine Field as its triggered ability is put on the stack to determine how many targets you may choose. Once the targets are chosen, the number of targets the ability has is locked in. Changing the number of isolation counters on Quarantine Field won’t change how many nonland permanents are exiled.
No other card is named in this ruling.
#2August 25, 2015· Wizards of the Coast
If Quarantine Field exiles multiple permanents, those cards all return to the battlefield at the same time.
No other card is named in this ruling.
#3August 25, 2015· Wizards of the Coast
If Quarantine Field leaves the battlefield before its triggered ability resolves, no permanents will be exiled.
No other card is named in this ruling.
#4August 25, 2015· Wizards of the Coast
Auras attached to the exiled permanents will be put into their owners’ graveyards. Equipment attached to the exiled creatures will become unattached and remain on the battlefield. Any counters on the exiled permanents will cease to exist.
No other card is named in this ruling.
#5August 25, 2015· Wizards of the Coast
If a token is exiled, it ceases to exist. It won’t be returned to the battlefield.
No other card is named in this ruling.
#6August 25, 2015· Wizards of the Coast
The exiled cards return to the battlefield immediately after Quarantine Field leaves the battlefield. Nothing happens between the two events, including state-based actions.
No other card is named in this ruling.
#7August 25, 2015· Wizards of the Coast
In a multiplayer game, if Quarantine Field’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.