The invasion was initiated by the forces of Chaos under the leadership of the Champion of Chaos Undivided, Archaon the Everchosen, the "Lord of the End Times." The Storm of Chaos (2521-2522 IC) was the name later given to the penultimate of the great assaults launched by the servants of Chaos upon the Old World, this time intended to conquer first Kislev and the Empire, and then the rest of the continent.
And with the coming of the end the old will fall by the hand of the new." - The Prophecy of Fate, taken from the Celestine Book of Divination by Necrodomo the Insane. In power will he thrive and glory in is name. Disease shall be his downfall and saviour divine. And from the Land tamed will rise a Champion. Anger his nourishment and blood his wine. With the coming of doom will march a lowly boy.
Then will the World know that the last war has begun. Upon his head the crown shall see all, and open eyes will prove woe to mortal kind. " Forged from the other world, six treasures shall he possess.