Emnir: Flight of Aginon
Cosmology of Eldera
Eldera is the Central Plane. Mages and Scholars postulate that Eldera was truly formed as a kind of shell to encase the Spirit World before the Astral Sphere formed to contain Eldera against the Endless Sea.
The Spirit World is what most believe to be contained within the Natural World. It is a realm of raw natural and magical energies and the entities born from them, that pours into the natural world from weaknesses in their armor.