Didn't see it, but I think (theory) Since Crowley this is the promise of "immortality"…makes more sense than cloning or adrenachrome…fits in with Magick…but what do I know.
Def think you can channel spirits/energy via kaballa or white/black magic or other means. Like Musicians, inventors, etc….but some use it for bad obviosly. All knowledge is out there in the ether somewhere. We are conduits…but most of us can't tap into it..at least not on command.