Ragnarok
The gods forged the world in war. Their fury shook the skies, the bones of the fallen made the mountains of the mortal realms, their tears filled the oceans, and from their blood were born men and beasts. As it was made so shall it be unmade. Surtur, the lord of fire, shall come. Thrymm, the lord of ice, shall follow. Then the horn shall blow once more from across the rainbow bridge, summoning the Einherjar, the finest mortal warriors, to fight the war at the end of time.