Mandate of Peace — ruling 1

Though other spells and abilities that are exiled won’t get a chance to resolve, they don’t count as being countered.

Mandate of Peace — ruling 2

If any triggered abilities trigger during this process, they’re put onto the stack after the game skips to the appropriate phase or step.

Mandate of Peace — ruling 3

Any “at end of combat” triggered abilities won’t get the chance to trigger that combat because the end of combat step is skipped.

Mandate of Peace — ruling 4

If an effect allows or instructs you to cast Mandate of Peace outside of a combat phase, you can’t do so. Its restriction takes precedence over that permission. Similarly, once Mandate of Peace has resolved, your opponents can’t cast spells even if another effect allows or instructs one of them to cast a spell.

Mandate of Peace — ruling 5

Mandate of Peace doesn’t stop any player from casting spells in response to Mandate of Peace before it resolves.

Mandate of Peace — ruling 6

Your opponents can still activate abilities, including abilities of cards in their hand (such as cycling abilities), and can still play lands.

Mandate of Peace — ruling 7

Ending the combat phase this way means the following things happen in order: 1) All spells and abilities on the stack are exiled. This includes spells and abilities that can’t be countered. 2) State-based actions are checked. No player gets priority, and no triggered abilities are put onto the stack. 3) The current phase and step ends. The game skips straight to the postcombat main phase. As this happens, all attacking and blocking creatures are removed from combat and effects that last “until end of combat” expire.

Mandate of Peace — ruling 8

In the rare case that the postcombat main phase is skipped, the game skips to the end step of the ending phase. If that step is also skipped, the game skips straight to the turn’s cleanup step. The cleanup step can’t be skipped.

Mandate of Peace : règles, fonctionnement et interactions (MTG)

Mandate of Peace 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

Cast this spell only during combat. Your opponents can't cast spells this turn. End the combat phase. (Remove all attackers and blockers from combat. Exile all spells and abilities from the stack, including this spell.)

How it works : Mandate of Peace

Original English text — Wizards of the Coast / Scryfall

#1August 23, 2019· Wizards of the Coast
Though other spells and abilities that are exiled won’t get a chance to resolve, they don’t count as being countered.
No other card is named in this ruling.
#2August 23, 2019· Wizards of the Coast
If any triggered abilities trigger during this process, they’re put onto the stack after the game skips to the appropriate phase or step.
No other card is named in this ruling.
#3August 23, 2019· Wizards of the Coast
Any “at end of combat” triggered abilities won’t get the chance to trigger that combat because the end of combat step is skipped.
No other card is named in this ruling.
#4August 23, 2019· Wizards of the Coast
If an effect allows or instructs you to cast Mandate of Peace outside of a combat phase, you can’t do so. Its restriction takes precedence over that permission. Similarly, once Mandate of Peace has resolved, your opponents can’t cast spells even if another effect allows or instructs one of them to cast a spell.
No other card is named in this ruling.
#5August 23, 2019· Wizards of the Coast
Mandate of Peace doesn’t stop any player from casting spells in response to Mandate of Peace before it resolves.
No other card is named in this ruling.
#6August 23, 2019· Wizards of the Coast
Your opponents can still activate abilities, including abilities of cards in their hand (such as cycling abilities), and can still play lands.
No other card is named in this ruling.
#7August 23, 2019· Wizards of the Coast
Ending the combat phase this way means the following things happen in order: 1) All spells and abilities on the stack are exiled. This includes spells and abilities that can’t be countered. 2) State-based actions are checked. No player gets priority, and no triggered abilities are put onto the stack. 3) The current phase and step ends. The game skips straight to the postcombat main phase. As this happens, all attacking and blocking creatures are removed from combat and effects that last “until end of combat” expire.
No other card is named in this ruling.
#8August 23, 2019· Wizards of the Coast
In the rare case that the postcombat main phase is skipped, the game skips to the end step of the ending phase. If that step is also skipped, the game skips straight to the turn’s cleanup step. The cleanup step can’t be skipped.
No other card is named in this ruling.