User blog comment:Vivaporius/AT Idea: Imperial Civil War/@comment-4051689-20120412190626

According to the laws abiding to both real-space and those constricted within the immiterium, I would like to, and with no harming intent, like to point out a simple matter that could potentially be canon breaking but, and with ease I may add, can be diverted if simply known.

The simple matter be it put, That how would Lorgar support himself within the physical universe for such a long period of time? The entire point of having Abbadon as the current warmaster of the black legion was subject to every daemons natural flaw, not being able to sustain themselves within real-space or at the very least breaking through, without the support of perhaps an emotional source or viel breaking continuity and even so a vast amount of it just to simply manifest for a few minutes. Now, as explain below and in another comment, A mortal does not suffer this flaw and thus is a perfect puppet of which the denizens of the warp can work through for an extended period of time without contimplating on the collected emotions of entire sectors just to stay manifest for a few more minutes. Sort of why Abbadon or a great of many main of well know Chaos Marine characters have yet to be raised to daemon-hood despite their efforts going beyond that of a daemon-prince within itself as justification for the fact that if they were to be ascended to daemon hood, they would be no longer able to enact any of the events that a mortal might do within real-space.

And really thats the problem, Lorgar would, and indeed any other primarch under demonic influence, be unable to exsist within the material universe for such a long period of time, let alone months without the collection of emotions, deaths and rituals that would have to be enacted personally just to sustain himself for a few more minutes. Like before, Angeron sustained himself with the personal slaughter of millions, sectors of millions to be exact, the collected blood shed maintaining his physical form untill he was banished by conventional means. Same for Magnus, he manifested within the physical universe only after thousands of sacrafices and rituals that took  years to come to fruition and even then he only manifested for a few hours and banished by both conventional means.

That is why I explained before-hand that we, at some point in the future, must start looking at more "mortal" potential leaders rather than simply "oooooooooh, we need a dread and powerful leader for this event, LETS PICK A PRIMARCH!!" to avoid situations like these. so as far as I see it, its either Go Mortal or come up with a titanic string of constant events to sustain Lorgar.