Geological / environmental event
In the genesis of the Elemental Planes, the mighty being known as Naxion stood as a pivotal force. Born from the ethereal realms of the Elemental Plane of Magic, Naxion was once a deity, a divine entity brimming with cosmic power. In an awe-inspiring display of immense might, Naxion channeled his celestial essence to birth the elemental realms, shaping the Planes of Air, Water, Earth, and Fire. This cataclysmic act required an unfathomable expenditure of his godly energies, permanently sundering his divine might and relegating him to a state just above that of mortals. The sacrifice of his godhood became the cornerstone of existence within these elemental planes, forever altering the balance of cosmic forces and marking Naxion's descent from godly omnipotence to a more finite and diminished existence.