Yenna, Redtooth Regent + Mystic Barrier

Yenna, Redtooth Regent

Mystic Barrier

How it works

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

By leveraging Yenna, Redtooth Regent to systematically duplicate Mystic Barrier, you can completely shut down the combat phase in multiplayer games. Because you choose opposite directions for each copy as they enter the battlefield via Yenna's ability, you cover every possible line of attack, trapping your opponents in a pacifistic lock as long as three or more players remain.