({2} magic symbol) ({G} magic symbol) each turn available.
Steps
Activate
Ba Sing Se's second ability by paying ({2} magic symbol) ({G} magic symbol) and tapping it, earthbending
Aeon Engine, as it's a land due to
Toph.
Activate
Aeon Engine by tapping and exiling it.
Ba Sing Se triggers, returning
Aeon Engine from exile to the battlefield.
Resolve the
Aeon Engine ability, reversing the turn order.
At the beginning of your end step,
Toph and
Wilderness Reclamation trigger.
Resolve the
Toph trigger, earthbending
Aeon Engine.
Resolve the
Wilderness Reclamation trigger, untapping all lands you control.
Pass the turn to an opponent.
During the opponent's turn, activate
Aeon Engine by tapping and exiling it.
Toph triggers, returning
Aeon Engine from exile to the battlefield.
Resolve the
Aeon Engine ability, reversing the turn order.
Repeat during your next turn.
Notes
This loop is written if you want the player before you in turn order to have turns. If you want the player that comes after you to have turns, wait until that player's turn and then start the loop at least 9.
Results
Locks out all of your opponents but one, and allows you to choose which of your two neighboring opponents get to have turns.