This remarkable engine relies on Sakashima of a Thousand Faces copying Avatar Kuruk—the transformed backside of The Legend of Kuruk—allowing you to leverage its massive Exhaust ability for extra turns without losing the legendary copy permanently. Because Sakashima of a Thousand Faces bypasses the legend rule entirely, you can safely manipulate these forms while Teleportation Circle steps in during your end step to blink your transformed copy. When Teleportation Circle returns the creature to the battlefield, it resets its state and lets you re-copy Avatar Kuruk fresh each cycle, entirely bypassing the "once" restriction on the original Exhaust ability to chain infinite turns.