21st Founding - Discovery of Inculaba: In 998.M41, Explorator Magos Marco Pteronus led an archeological expedition to the Dead World of Inculaba, discovering a long-lost Adeptus Mechanicus geno-lab.During excavation of the site it was discovered that buried deep within the rock of this barren world were secrets that had lain undiscovered for 5,000 Terran years, secrets regarding a Founding of the Space Marines sometimes referred to as the Cursed Founding.The 21st Founding was the largest Founding of Space Marine Chapters since the Second Founding following the Horus Heresy in the early 31st Millennium. It had taken place in the 36th Millennium shortly before the start of the Age of Apostasy.Upon further explorations of the site, it was discovered that the geno-lab was indeed the site of the secret project known as "Homo Sapiens Novus," where Mechanicus Genetors attempted to perfect and remove the existing, identified deficiencies in flawed Astartes gene-seed, and ultimately begin the production of new and improved primarch-like Space Marines.In many ways this was a similar attempt to the more successful effort to create the Primaris Space Marines which had begun after the end of the Heresy on the orders of Roboute Guilliman.But the project was doomed to failure as the Genetors proved far less skilled in the genetic sciences than the Emperor of Mankind or Belisarius Cawl, and their efforts resulted in the development of seriously flawed gene-seed that was used to craft the organ implants for the new Chapters.A secret vid-log kept by the former project manager revealed the full extent of their failure. The most seriously afflicted Chapters exhibited spontaneous and extreme physical corruption, turning them into a race no longer Human or sane.Most of the Space Marine Chapters founded during this time eventually turned Traitor and swore themselves to Chaos or met a gruesome end at the hands of other Space Marine Chapters and the Inquisition's Ordo Hereticus.Others developed genetic idiosyncrasies, mutations that strained the tolerance of the Inquisition and threatened the Chapter's survival. The Founding itself ended when one of its projects, already corrupted by Chaos, sent a signal through the Warp and alerted the vile Traitor Fabius Bile to its existence. Bile was the former Chief Apothecary of the Emperor's Children Traitor Legion who served Chaos Undivided by seeking out new recruits for the Traitor Legions.The Explorator team further discovered that there was a hidden laboratorium that contained three large incubation tanks with an enormous Human male floating in amniotic fluid within each one. The physiology of these giants were similar to Space Marines, but the subjects were far larger than normal Astartes.Two of these tubes were obviously damaged, the fluid within cloudy and stagnant, but the third still appeared to be functioning. Autopsies were performed on two of the bodies while the revivification process was begun on the third. An agent of the Inquisition that had been inserted within the Adeptus Mechanicus some years before reported the disturbing news of the discovery from the archaeological site on Inculaba.A Grey Knights team was dispatched to prevent the sacred technology of this site from falling into the wrong hands. But by the time they arrived, they found no trace of the Adeptus Mechanicus Explorator team and no sign of their vessel. The site was as bereft of life as a world stripped by the Tyranids. There were no bodies discovered and no evidence of any attackers.Astropaths detected a residual Warp trail, but were unable to discern its direction. The site was then bombed from orbit with Cyclonic Torpedoes and all record of it was expunged from the Imperial bureaucracy. The Inquisition fears that what was on this world is now gone, taken by the agents of Chaos like Fabius Bile, and that they will eventually rue the day that this cursed place was discovered anew.