Levin Cloud managed to reach the source of the enormous life energy. He only sensed it when he got close, and he felt the energy of life being used in a particular area. He immediately told Kanlaon to fly towards the area he pointed.
The dragon also trusted his master's friend as he is trusted by their master. Kanlaon picked up the pace and carried both levin Cloud and Charon. By the time they arrived, Levin Cloud immediately activated Sanctuary to save an elven sentinel.
Levin Cloud also saw the faceless one attacking the group which made him shocked. He thought that his group would fight the elder and the elven sentinels protecting the prophet but that is not the case.