Psychic Scourge - History: The Psychic Scourge supposedly functioned by utilising the energies of the Warp provided by its core's power source to target specific xenos species through the signature their minds generated within the Immaterium. As a result, Inquisitor Drogan of the Ordo Xenos claimed that the Psychic Scourge would be capable of eliminating an entire invading force of Greenskins or other alien enemies of the Imperium.Unknown to anyone but himself, Drogan was aware of the artefact's innate connection to Chaos and the destruction it was potentially capable of unleashing, but ultimately felt it was worth the risk if it could potentially ensure total victory for the Imperium. Believing that his abilities as a psyker would shield him from being corrupted by the Warp, Drogan secretly traveled into the Immaterium to gather greater amounts if psychic energy and conduct research.Drogan claimed that the research and development of the weapon had been sanctioned by the Inquisition. It was for this reason that Drogan established his base on the Forge World of Graia where he continued his study of the weapon's technologies in secret. The project included the study of various xenos specimens that were subjected to the effects of the Psychic Scourge. This included successful tests conducted on an Ork, T'au and Tyranid Lictor specimens that proved the weapon could be of immense value to the Imperium.Before the Liberation of Graia campaign, Inquisitor Drogan's ventures into the Warp had secretly drawn the attention of the Heretic Astartes Sorcerer Lord Nemeroth who subtly began influencing Drogan to continue his research along certain lines of inquiry. Although Drogan eventually suspected a potential outside force was responsible for his successes, he ultimately completed his work on the weapon before Nemeroth killed and transformed him through his sorcery into an undead puppet.Nemeroth intended to use the Psychic Scourge he had tricked the Inquisitor into building for him to break through the walls of reality and create a localised Warp rift that would allow his Chaos Space Marine warband to bypass the Imperial defences and launch a direct invasion of Graia's surface. Nemeroth intended to claim the power source for the Psychic Scourge that Drogan had so nicely created for him and use its nearly unlimited draw of Warp energy to ascend to become a Daemon Prince.When Graia came under attack from an Ork WAAAGH! led by Warlord Grimskull, a xenos assault of such a strategically important Forge World attracted the rapid deployment of the Ultramarines Chapter of the Adeptus Astartes who arrived to repel the Orks. Their arrival led the possessed Drogan to enlist Captain Demetrian Titus' aid in securing his "weapon".The Ultramarines captain of the 2nd Company was reluctantly convinced by the Inquisitor to use the weapon to defeat the Orks and the Psychic Scourge was activated. However, the ruse was revealed when this simply splintered the walls of reality and allowed the Chosen of Nemeroth warband and their Daemonic allies to initiate their invasion of the Forge World, an ivasion that Titus and the Ultramarines were successfully able to defeat.However, the power source for the Psychic Scourge was later used in experimentation by a rogue group of Heretek Tech-priests of Graia which led to the opening of another Warp rift and an invasion of the Forge World by the Heretic Astartes of the Black Legion and the Daemonic legions of Tzeentch and Nurgle. This invasion was defeated through the heroic efforts of the Ultramarines Sternguard Veteran Malum Caedo.Finally, during the Fourth Tyrannic War in the Recidious System, Archmagos Nozick Beta-12 of the Adeptus Mechanicus attempted to reconstitute the same power source used for the Psychic Scourge on Graia over a standard century before using the remains of the original artefact recovered from Graia. This new attempt was known as "Project Aurora" and its research and development was pursued on the Recidian worlds of Kadaku and Demerium. The archmagos hoped to use the weapon in a similar manner to the Psychic Scourge, only this time to banish all those who had been touched by the taint of the Warp from realspace into the Immaterium.Unfortunately, this proved to be just another ruse by the forces of Chaos, this time led by the Thousand Sons Sorcerer Lord Imurah, who had tricked the Mechanicus into recreating the power source so that he might seize it for himself like his predecessors. Thanks to the efforts of Lieutenant Demetrian Titus, now a Primaris Space Marine, Imurah was defeated during the Defence of Recidious campaign and Titus detroyed the power source once and for all.