The Loki season 2 finale ended with the God of Mischief making the ultimate sacrifice. After having exhausted every possibility about how to stop the Temporal Loom from overloading, he finally concluded it was only he who could prevent it.
After stepping out onto the gangway, he destroyed the Loom and grabbed all of the dying timeline branches using his magic. Transforming into his god-like form, he walked through a tear in time and space to the Citadel at the End of Time. Here, holding on to all of the timelines, he became a kind of tree god, physically representing the Norse tree of life, Yggdrasil.
