Pleroma

Pleroma is a realm of pure and perfect spirit beyond the boundaries of the physical world. It's what is commonly known as the afterlife. There are several ways to access it: the Ankh of Osiris, which is tuned to the Pleroma's wavelength, and can summon the spirit back from Pleroma and effectively resurrect someone. The other way is via the Astrolabe of Mashallah which creates a doorway to Pleroma, and when someone steps through it the spirit and body separate. When the doorway is closed the body and spirit are forever separated, killing anyone who stepped through the doorway.

Several philosophers have tried to document the Pleroma over the time through various different ways.