This fascinating loop hinges on the transformative power of The Legend of Kuruk // Avatar Kuruk, whose backside carries a formidable Waterbend exhaust ability capable of granting extra turns. Because Sakashima of a Thousand Faces bypasses the legend rule entirely and can copy Avatar Kuruk, you can draft a duplicate of the Avatar onto the battlefield while still leveraging Conjurer's Closet to blink that copy at the beginning of each end step. Resetting Sakashima of a Thousand Faces this way lets you repeatedly copy Avatar Kuruk fresh on each new turn, bypassing the "once per game" restriction on the exhaust ability and securing endless extra turns for your victory.