The Cosmos[]
The Cosmos is a hyperdimensional space within which float the various Spheres of Existence. The inhabitants of Cybele know of seven Spheres: The Celestial Sphere, the Empyrean Sphere, Chthonic Sphere, and the Elemental Spheres of Fire, Earth, Air, and Water. This is true, as far as it goes; but it is not the complete truth.
The Celestial Sphere that holds the world of Cybele is not the only celestial sphere; it is merely one of many such spheres floating within the infinite plenitude of the Cosmos. The Cosmos is not just vaster than the inhabitants of Cybele can comprehend; it is vaster than even the gods can comprehend, for it was not created by them.
The Prime Sphere[]
The Prime Sphere was a celestial sphere created by the Logos itself, a sphere of such enormous extent that it almost defied being termed a sphere at all. Unlike Cybele’s sphere, which holds but a single sun, the Prime Sphere carried over 70 sextillion stars. The gods of the Cosmos were birthed on this sphere, evolving from primitive lifeforms into higher entities over countless millions of years.
But the Prime Sphere was destroyed long ago in a terrible war between the Lawful and Chaotic gods in which the lives of countless mortal and divine beings were extinguished. It exists now only in the memories of the surviving gods. The Empyrean gods honor their ancestral home each time they create a pocket universe: The creatures and civilizational models they employ are all, in one way or another, descended from those of the Prime Sphere.