Core

Cores are small balls of energy that Enerjak is able to remove from his victims. He can then use those Cores to create Prelates, which have the physical likeness of the bodies the Core belonged to. The process of extracting the Core seems to be painless and relatively quick and after the extraction, the victim is more or less alive, but it's rather hard to tell, as said victims become limp, have a completely blank expression on they're face (with their faces frozen with the expression they had during the extraction), and are silent, but they can be revived once the Core is returned to they're original bodies.