User blog comment:Tholanar/The mightiest god in The Elder Scrolls!/@comment-5709731-20121216072847/@comment-5709731-20121223105437

Does it matter? It was his and Anu's power that was drained to create the Aedra and Daedra, who are plane(t)s in themselves. Every Et'Ada has a plane, which is the closet they get to a body ((At least that's what I assume)). Nirn is a plane as well, and to create it, a hell lot of power was needed. Sithis and Anu's powers were used to create the Et'ada. Each of them should logically be as costly to create as Nirn, and there were thousands of them. Enough to drain Sithis and Anu for quite many of their powers.