Legion-necron warrior

"The most shameful detail about the threat that is the Legion, is that it is partly of the Imperium's own creation. A cabal of Radical Inquisitors and Heretechs thought they had found an excellent opportunity, when an Explorer-fleet found a Necron Tomb world in which the upper echelon and the core databases were destroyed by still unknown causes. Indeed, at first the reprogrammed Necrons seemed faithful servants, and for a moment it seemed the old robotic legions of a time from even before the Emperor wold rise again. But now it seems it was rather the Rebellion of the Iron Men that was reborn..."