User blog comment:Inferno Pendragon/Afterlives, Immortals and Omniverse Paradoxes/@comment-1591389-20160101152112/@comment-1705775-20160102205723

also the Life, Death and Rebirth working with a tree works with our multiverse, since all "souls" would ultimately remain with the same multiverse (any that escaped into Omniverse proper would never really be spoken of (as they'd no longer really be part of our stories at all) ).

Abysm could act a bit like the Greek concept of Chaos, existing before the "gods" and seeking to return everything to nothing.. that would mean Abysm in addition to being "Death Prime" is a unique entity, surrounding the multiverse and acting as the "wall" as it were that separates our multiverse from others.. no being, living or dead, can cross through Abysm save for in very rare occurances (like how Quantum managed to enter our multiverse in Shadow of Death).