Mandate of Peace

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

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

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.

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.