The God Tempest, also known as the Mother of Thunder and Mother Storm, is a cosmic thunderstorm which has existed since the birth of the universe, growing in size as time passed. Because those whom truly deserved its wrath where the ones whom bore the worst of it, people believed that it had a mind.
It was the size of a galaxy and its winds were so powerful that comets were blown off course, worlds torn from their orbits, and stars were snuffed out. Moons were turned to dust by its lighting and black holes trembled because of its thunder. It took days of Odin using all of his power to contain the storm, entrapping it in a nugget of Urur which the dwarves forged into the hammer Mjölnir. Recently during the War of Realms, the storm once more manifested.