Phaenonite - The Phaenonite Schism: Within a space of only a few solar decades after Phaenon Prime's establishment as an Inquisitorial base, disquieting reports began to reach the senior Inquisitors both in the Crusade forces and the nearby Ixaniad Sector that darkness and heresy had taken hold on the Dead World. Troubling reports of the impiety and strange doctrines being espoused there were placed by Adepta and Inquisitors using the world as a way station, whilst covert investigation by agents of the then-newly founded Calixian Conclave reported that a number of self-professed "Phaenonite" Inquisitors based there had begun traveling through nearby sectors and slowly gaining converts to their cause.With measured subtlety, the Calixian Conclave chose a known "Renegade" among its numbers -- Inquisitor Phibes (an ardent Xanthite whose actions had earned him official censure in the past) -- to infiltrate this growing faction and uncover the truth. Phibes and his Acolytes conducted their intrigues for more than three Terran years, traveling between Phaenon Prime and the still turbulent corners of the newly founded Calixis Sector where the Phaenonites' agents were at work.For a long period of time, Phibes was considered missing and presumed dead. However, he returned unexpectedly to the newly constructed Tricorn Palace on Scintilla with the hounds of hell at his heels, his flesh burned down to the bone and kept alive only by the fruits of his own warped genius. His testimony to the Conclave revealed the awful extent and enormity of the Phaenonite's crimes and heresies; chief among which were the denial of the Emperor as divine, and the pursuit of Warp-tainted sciences and the horrors of the Dark Age of Technology.Phibes also revealed that the Phaenonites had infiltrated and taken over several fledgling Chaos Cults, Heretek cabals, and Renegade warbands that had been thrown up on the edges of the new sector to further their dark aims. The Phaenonites had been the hidden forces behind numerous pirate attacks and raids on Adeptus Mechanicus facilities in order to feed their requirements for fuel, ammunition, and other such vital supplies. Phibes explained that Phaenonite agents had suborned several fledgling governments in the sector and used ongoing pacification conflicts at the edges of the Halo Stars in order to conduct their blasphemous experiments. There, they had secretly tested corrupt weapons directly against human Imperial colonists. Worse yet, they had armed the forces of the Archenemy from behind veiled intermediaries in order to test the efficacy of their designs.In response, the Phaenonites and any who aided them, whatever their degree or station, were declared Excommunicate Traitoris by a specially convened Grand Council of the Calixian Conclave in 427.M39. This sparked an immediate schism and open warfare within its own ranks and that of the Conclave Ixaniad. A bloody and merciless purge within the local Inquisition soon followed along with a supporting Carta of Extermination ratified by the Chamber Inquisitorial of Terra whose writ still holds to this day.As for Phaenon Prime, some within the Ordo Malleus judged that the corruption of so many hardened to the wiles of the Warp so quickly could be not be coincidence. Some dark force dwelled there, they believed, although whether it had always been so or something that had been brought there to fatally spread its influence like a virus remained unknown. In any case, the Priesthood of Mars were happy to grant the Calixian Conclave's request. By the dictate of the Fabricator-General himself, they marshalled the power of their city-sized voidships and tore a moon from its natural orbit to strike Phaenon Prime, smashing the planet to fragments.