" truth of the matter is that we will never know " - Lord Kesharq
I disagree. Look into Space Wolves chapter creation, analyze: How do they become to life in this realm ?
The answer of this question will bring you to the essence of the core that move this world. It will show you the route from fluff to the table, as one mechanic of the Warp !
" more change of them bring back the Ultramarine one than the khan.. " - Lord Kesharq
Total commercialize on the Ultras since they are the 2nd most known space marine chapter.
No pain, no game