Nurgle's Rot

From Lexicanum

Nurgle's Rot is the most foul of the countless contagions which afflict mortal beings.

It is Nurgle's gift to the mortal universe, a progressive plague combining the worst of all the many plagues in existence. It is a curse that is all the more horrible because it does not end with death, for it is as much a spiritual plague as a physical one, and it infests the soul as it does the body. When a mortal dies from Nurgle's Rot, his soul is forfeit to Nurgle, and from that soul-stuff Nurgle fashions his daemons, the Plague Bearers. Many sufferers undertake death quests in order to be killed and avoid this fate.

Sources

• Realm of Chaos: The Lost and the Damned