Summoned and enslaved by the Magi of the immortal Emperor Constantine of Byzantia, the daemons and incubi and fiends of the unspeakable city of Dis and its environs have become the foremost threat to the world since their inclusion in the armies of the stone cities not a decade ago. The legates, increasingly greedy for power and glory - just like Constantine himself - are by now used to the sight of thousands of these despicable, unearthly creatures within their legions, and their effects on the legionaries and auxiliaries, for few armies can stand against such power; but none could ever be anything but aghast and terrified of the greatest Daemon yet enslaved, Krull. A mighty Lord of Dis and (it is said) right hand to Dispater himself, that the Emperor Constantine - admittedly the greatest Incantus of Byzantia - could bend Krull's will to his own ends only shows the powers inherent within him; or, many whisper, the desires of Dispater to influence the world of Man. Regardless of whether Krull appears by design or by servility, when he does, it is rare that the enemies of Byzantia do not quail in the face of such power, and rarer still that the legions are not the victors.