Mystic Barrier + Mirrormade

Mystic Barrier

Mirrormade

How it works

1. At the beginning of each of your upkeeps, Mystic Barrier and Mirrormade trigger, choosing "left" for Mystic Barrier and "right" for Mirrormade.
2. As long as there are three or more players in the game, creatures cannot attack.

By leveraging Mystic Barrier alongside a clever clone via Mirrormade, you can completely shut down the combat phase as long as three or more players remain in the game. Because Mystic Barrier and Mirrormade can each be set to choose opposing directions during your upkeep, they create an impossible set of restrictions: players are simultaneously forced to only attack the nearest opponent on their left and the nearest opponent on their right. This overlapping, contradictory direction lock paralyzes the board entirely, leaving creatures unable to attack anyone at all.