Atlas Infernal - History: Sometime after the Horus Heresy in the 31st Millennium, this mysterious volume was taken by Aeldari Harlequins and was deposited in the Black Library's Wraith Tower where it was considered one of the Black Library's most dangerous (to the Aeldari) items. Millennia later, in the first century of the 42nd Millennium, the Atlas Infernal came into the possession of Inquisitor Czevak, its current owner.Czevak had read extensively about lost or forbidden human history when he became one of the only humans to ever penetrate to the hidden Aeldari craftworld that was the repository of all of that ancient race's knowledge of Chaos, a vessel located within the confines of the Webway that was known as the "Black Library."He knew that for several Terran years before the start of the Horus Heresy, an army of Mechanicum Tech-priest specialists (known as Magi Ethericus and Artisans Empyr) were building the Emperor of Mankind's most secret and vital project deep within the bowels of the Imperial Palace: a Terran extension into the Aeldari Webway that was intended to unite all the worlds of the Imperium without the need for Warp travel and initiate a new Golden Age for Mankind.Czevak assumed they were protected by companies of Custodians, and while building the transdimentional tunnels, were warded from the daemonic denizens of the Warp by the presence of squads drawn from the Sisters of Silence.The Primarch Magnus the Red's catastrophic psychic visit to the Imperial Palace in the early 31st Millennium to warn the Emperor of the betrayal of the Warmaster Horus, as the Horus Heresy was first taking form, caused irreparable damage to the project and destroyed the construction force's way back to Terra. Czevak reasoned that their only way back to realspace was through the hostile and uncharted Aeldari tunnel network.The humans constructed an atlas of their wanderings within the Webway and named it the Atlas Infernal. The Mechanicum crafted the pumping mechanism for the tome and used the donated battle plate of the Custodians to create the covers, clasps and interior frames.One or more Sister of Silence presumably willingly sacrificed themselves to provide the flesh necessary to create the atlas' pages. The Magi Ethericus, by some now lost process, then bestowed the "pages" with their adaptive and transformative abilities.After being captured by the Harlequins, the book remained in the Black Library for millennia, but it was never opened by the Aeldari because of its dangerous nature to fully psychic beings like themselves. In the first century of the 42nd Millennium the Aeldari Guardian-Scribe Adara-Ke gave the Atlas to Czevak so that he could escape the Black Library, and also committed suicide by opening it.Czevak used the tome to escape, and has since frequently utilised it to traverse the galaxy through the Webway, evade pursuers and thwart opponents, especially his prime enemy, the Chaos Sorcerer Ahzek Ahriman. Ahriman actively seeks the book, though it is unclear how he hopes to deal with its Pariah properties.Czevak also used the volume to resist a pursuing Harlequin troupe which was seeking both the book and his death, killing a Shadowseer with it, and injuring several other members of the troupe.