All that could have been   It is the 42nd millennium, the Emperor’s Blessed Imperium of Man has lasted for over a hundred centuries but is now on its knees.  Abaddon, cursed be his name, finally accomplished something his genefather never did, unleashing fell rites that shattered many of the barriers between realspace and the Immaterium.  Entire worlds sacrificed to power profane rituals to the Dark Gods.  Key nodes in the web of the Imperium went dark, dragging entire sectors under.