Nysashgar, the mythical ouroboros, is the entity that contributes largely to the destruction of the Tree of Existence. He sits deep within Feinhorn Peak, gnawing at the largest and longest roots. Scholars, such as Khoros, understand the need for Nysashgar and his destructions, as they keep the Tree in balance.
Nysashgar can be reached from within Inner Feinhorn. He will freeze foes in a block of ice, requiring others in the party to free them.