By leveraging Marvin, Murderous Mimic to copy the devastating activated ability of Avatar Kuruk, you gain access to an extra turn engine that completely bypasses the usual one-time restriction of the *exhaust* keyword. The magic truly happens when you factor in Teleportation Circle, which cleanly blinks Marvin at the beginning of your end step to reset it, letting you ignore the need to wait for The Legend of Kuruk to naturally grind through its lore counters again. Thanks to Marvin's ability to borrow Avatar Kuruk's text box, your artifacts and creatures chip away at the massive {20} mana requirement, securing a permanent lock on the game with infinite extra turns.