Perverter's Blight

"Of all the Perverter's many crimes the worst by far is stealing the purity of the innocent. He filled the blood of Gallican with poison, and left it to sour. Now none are clean, and we weep for our lost innocence."

- Cardinal Forrosa Bellant

The Perverter's Blight is a foul curse that plagues the Gallican Sector, and is the source of many of their ill-fortuned place's woes. Created by the now long dead Chaos Sorcerer Galkran Vornost, the Blight was encoded on the DNA of the people of the planet Draalford, where Galkran made his last stand. Due to the poor decision made by one of the IMperium's officers at that battle a sizable number of Draalford's population was spread across the Sector as refugees, and when they bore children with the locals of their new worlds they passed the Blight on to them. The Blight is a foul thing that turns ordinary people that carry it into twisted, cursed mutants known as Blightspawn. This combined with the fact that a family can carry it for generations without it manifesting has led to the Gallican Sector being quarantined by order ofthe High Lords of Terra until such time as the Blight has been eradicated. The Blight is the last and greatest misery that Galkran left to torment the Sector, and if the Quarantine is not ended soon it my be what spells Gallican's doom.

History
The Origin of the Blight can be traced back to the Battle of Draalford. During that battle Galkran Vornost, better known as Galkran the Perverter, fought against the forces of the Emperor with his heretical army. Galkran holed up  in Draalford's most famous monastary. Normally a place for men of faith to refine their devotion to the Emperor, Galkran saw fit to profane the holy place and use it to work his most vile atrocity yet.

Galkran began his malign ritual even as the numerically superior Imperial forces besieged his position. His army of acolytes sacrificed themselves by the thousands to buy the Sorcerer more time. The Psykers of the Imperial forces felt the growing disturbance within the Warp, and urged their commanders to end the battle quickly. The commanders of the Imperial force wanted to take Galkran alive to make an example of him, and to retake the monastary for the Emperor, but finally they saw the wisdom of their PSykers' council. Drawing their ground forces back from Galkran's position, the Imperial Navy swooped in to clear the skies of obstacle. When the opneing was made the Navy blasted the monastary from orbit, ending the Perverter's life and scattering his remianing forces.

However the Imperial Victory came a moment too late. Even as the Navy's barrage fell Galkran finished his ritual, and as he died a great wave of sorcerous power swept across the whole of the planet, and even a ways into orbit. It was then that the entire population of Draalford was tainted with the Blight, as well as many of the Imperium's soldiers during the battle, and some of the personnel in low orbit.

Having sensed the disturbance Askerion, the Chief Librarian of the Bronze Lions, counciled that the Perverter's work was done, and that it would be safest to put the world of Draalford out of its misery rather than wait to see what fate Galkran had in store for it. The other commanders and the liasons from the Inquisition agreed, and it was decided that Draalford would be subjected to exterminatus. However a rare moment of mercy would undo that sacrifice.