Yenna, Redtooth Regent + Mystic Barrier

Prerequisites

• Yenna does not have summoning sickness.
• You have at least two opponents.

Steps

1. 1Activate Yenna by paying and tapping it, creating a token copy of Mystic Barrier.
2. 2As the copy of Mystic Barrier enters the battlefield, choose the opposite direction that was chosen for the nontoken Mystic Barrier.
3. 3At the beginning of each of your upkeeps, keep the direction chosen for each Mystic Barrier.
4. 4As long as there are three or more players in the game, creatures cannot attack.

Effects

• Creatures can't attack
• Lock