User blog comment:Inferno Pendragon/Afterlives, Immortals and Omniverse Paradoxes/@comment-1591389-20160101152112

While I don't know how well this will work in Canon, I came up with an idea, a sort of cross between Final Fantasy's Lifestream and the concept of the world tree. Perhaps when it was just the Alpha in His single Universe, he originally created a spiritual "structure" That acted as a tunnel to the Afterlife. After this Universe split and became the Multiverse (or even when it became the Omniverse if we want to go all the way), and the other iterations of the God-Force (Divine Trinity, The Truth, Caprice, Katrita, Creator of All, etc.) they added their own branches based on their afterlives, with the Shadow-Force, devil-lords, and polytheistic gods creating their own branches.

From the tree the God-Force being creates the souls of humans (or any creator god or in dimensions based on alien or non Judeo-Christian based worlds, the Universe itself absorbs them from the "tree"). When an intelligent being dies it goes through a "branch" that acts as a guide to the afterlife (the tunnel you see the light at the end of.) In the case of reincarnation, this branch leads to within the tree itself, where the soul is either rewritten, or it acts like the Lifestream and the soul mingles with the souls of others to create something new, or perhaps both depending on how the reincarnation works (Hindu-like where the soul is purified and returned, or if you just want past life memory vs the more Buddhist-like concept where there is no concrete "soul" mere a "life" that's in constant flux.)

The only problem I think of (despite the fact there are probably many more) is that it makes our Gods look more like demiurges than Supreme Beings, which they are despite merely being dream aspects of the Dreamer. Either way, I hope this helps Inferno! :)