Changes

After [[Roboute Guilliman]] was resurrected in the closing days of the [[41st Millennium]], Mortarion sensed his brothers rebirth. Guilliman's return sparked Mortarion's interest in material affairs once more, and for the first time in 10,000 years he decided to lead the whole of the Death Guard in a renewed campaign.{{Fn|16}} In anticipation he created 7 new diseases with the [[Hand of Darkness]], one of which was a blindness-inducing plague that swept through [[Ultramar]]. Only Guilliman's presence could cure the sickness.{{Fn|14}} Later, Mortarion personally led a massive invasion of Ultramar in what became known as the [[Plague Wars]]. Mortarion massacred the population of entire worlds in an attempt to goad Guilliman to battle.{{Fn|15}} During that campaign, Mortarion appeared during the [[Invasion of Konor]] where he led the Death Guard in an attempt to break through to [[Macragge]] itself. The Daemon Primarch later aided [[Typhus]] and [[Ku'Gath]] in their trap against Guilliman on [[Parmenio]] but was foiled by a mysterious young girl who may have been a [[Living Saint]].{{Fn|20}} On  Mortarion's plan against Guilliman reached its climax on [[Iax]] Guilliman , luring his brother there in cooperation with [[Ku'gath]], who created a deadly disease known as the [[Godblight (Disease)|Godblight]] which was capable of killing even a Primarch. Mortarion and Ku'gath both ignored orders from Nurgle himself to move to the [[Scourge Stars]] due to the new [[War in the Rift]], with even [[Typhus]] abandoning his Primarch to follow the Plague God's will. Mortarion finally still believed himself not a slave to Chaos, and sought to transform Ultramar into an extension of the Garden of Nurgle.{{Fn|22a}} On Iax, the two Primarch's came to blowsbut Mortarion was able to emerge the victor thanks to his Daemonically-enhanced strength and resilience. Administering the Godblight, fighting one another Mortarion attempted to stalemate goad his brother down the path of corruption by stating Nurgle could save him from his agonizing death. When Guilliman suddenly reawoke and channeled the power of the Emperor directly, Mortarion fled before the Daemon Primarch withdrew under cover power of his Father.{{Fn|22b}} According to [[Virus BombRotigus]] , both Mortarion and Ku'gath have earned the displeasure of Nurgle for his own mysterious reasonstheir insubordination and failure.{{Fn|1522c}}