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The '''{{PAGENAME}}''' was an engagement during the [[Horus Heresy]].{{Fn|1}}

Following the [[Drop Site Massacre]], the devastated [[Raven Guard]] had been infiltrated by a number of cosmetically modified [[Alpha Legion]] marines. Led by [[Omegon]], who was in hiding on [[Kiavahr]], the Alpha Legion planned to recover an extremely important artifact that the [[Emperor]] had given to [[Corax]]. It eventually became apparent that what Omegon was looking for was a piece of the [[Primarch Project]]'s [[Gene-Seed]], which allowed the Raven Guard to produce a new generation of [[Raptor (Raven Guard)|super soldiers]]. Omegon meanwhile fermented dissent on Kiavahr, particularly among the [[Tech-Priest]] guild known as the "Order of the Dragon" which greatly resented Imperial rule over their Forges.{{Fn|1}}

Shortly after Omegon departed Ravendelve, Corax organized a general offensive against the now abandoned rebel forces. Loyalist Skitarii and Titans from the [[Legio Vindictus]] joined the Raven Guard in securing Ravendelve, then driving into Kiavhar proper. Meanwhile, [[Horus]] received the supposed stolen gene-tech from [[Alpharius]], but in truth the Alpha Legion twins had given him a false copy, keeping the real product for themselves.{{Fn|1}}

Kiavahr was once operated by a technocracy run by trade guides that were overthrown by the uprising led by Corax on Lycaeus and the coming of the Imperium. Though once powerful, the Imperium and the Mechanicum forces took over the planet and disbanded most of those who were connected to the old structure. Omegon and other operatives of the Alpha Legion infiltrated the planet and made contact with renmants of the old tech-guilds and promised them power once again. Omegon operated out of the largest city, Nabrik in the Wellmetal district, and he kept a constant eye on the operations of the planet. His goal was to destabilize the world enough to gain the gene-seed technology that the Cabal informed Alpharius and Omegon would be obtained by Corax. One of the contacts, Iyadine Nethri of the White Iron Guild, informed the primarch that manufactorum thirty-eight, which produced supplies for power armour, was being scaled back, and Omegon had Alpha Legion operative Verson plant an operative to keep an eye on the facility.{{Fn|1a}}

Omegon met with Guildmaster Armand Eloqi to convince him and his followers to turn against the Mechanicum and join with Horus. However, Eloqi was skeptical and fearful of reprisal until Omegon explained the disaster that befell the Raven Guard's forces. Magos Unithrax joined the meeting, initially causing Eloqi distress until Unithrax revealed himself as a member of the "Order of the Dragon" who serves another that wasn't Terra and sought to take control over the Mechanicum forces. Eloqi was still uncertain over what to do until Unithrax mentioned that events were already unfolding and any who stand against them would be crushed. Before Eloqi could leave, Unithrax injected him with a neurotoxin that would kill if Eloqi betrayed them. After Eloqi leaves, Unithrax updated Omegon on the rebellion on Mars.{{Fn|1b}}

*{{Endn|1}}: [[Deliverance Lost (Novel)]],{{Cite this}}

**{{Endn|1a}}: Chapter 6