Nykona Sharrowkyn - Iydris: Despite the losses inflicted by the Emperor's Children and the Iron Warriors, the Iron Hands would not relent. The Sisypheum made its way to the Crone World of Iydris where Cadmus Tyro led the Strike Cruiser's entire complement of warriors to the surface, a few warriors short of 150 Astartes against the gathered might of two full Space Marine Legions.As the most experienced team of scouts, Wayland and Sharrowkyn led the way, spying on the Traitors who had already erected fortifications around the central tomb which allegedly harboured the prize coveted by the two Primarchs. Following their Aeldari guide's directions, the Iron Hands were able to ambush the Traitors just as Fulgrim was conducting the foul ritual that would see him reborn as a Daemon Prince of Slaanesh.Benefitting from the confusion sown by the awakening of Iydris' wraithbone constructs, the Iron Hands infiltrated the tomb complex and were able to gather around the two Primarchs and their personal retinues. What they witnessed was only further testimony to the degenerate nature of the Traitors as Fulgrim and his first captain, Lord Commander Eidolon, conducted a vile ritual during which Fulgrim absorbed the life energy of hundreds or even thousands of Aeldari Spirit Stones.As a further sacrifice, the Emperor's Children began to take their own lives or in some cases that of their allies. But the crowning achievement was to be the sacrifice of a fellow Primarch. At their first meeting on Hydra Cordatus, Fulgrim had gifted his brother a rare gem he had named the Maugetar Stone, an enchanted crystal that had slowly gorged itself on Perturabo's life force, the final piece of the puzzle that would allow Fulgrim to ascend to the status of a Daemon Prince of Slaanesh.As both Primarchs fought each other, Perturabo, intent on denying Fulgrim the power residing in the stone cast it away into a great pit.However, Garuda -- Captain Branthan's cybernetic eagle -- seized the Maugetar Stone as it was dropping into oblivion, revealing the Iron Hands' presence and heralding their attack. Fortunately for the Emperor's Children, the swordsman Lucius was able to clip one of Garuda's wings by a well-placed shot of his Bolt Pistol, starting a desperate struggle for the possession of the Maugetar Stone.Sharrowkyn was also present, hiding in the shadows, covering the approach to the stone with his Needler Sniper Rifle. Acting on a hunch, Lucius sent one of his subordinates to fetch the stone, and the Astartes was promptly downed by two high precision shots that shattered his helmet's eye-lenses and exploded in his skull.Opening fire with his Bolt Pistol, Lucius forced Sharrowkyn out of hiding. Diving forwards, he quickly seized the Maugetar Stone and unsheathed his sword. Sharrowkyn did not wait long, firing his Jet Pack and opening fire on his descent. While every shot hit his mark, no needle was able to penetrate Lucius' Power Armour.Lucius lashed out, cutting Sharrowkyn's carbine in two. "You bring a needle-carbine to a sword-fight?" the swordsman sneered while Sharrowkyn unsheathed his own weapons. Both swordsmen had longed to finish their interrupted duel, and as an act of respect, Sharrowkyn gave his opponent what he had denied him during their last encounter: his name.Sharrowkyn noticed at once that the swordsman had changed his second sword for a viciously-looking barbed whip with which Lucius attacked first, grazing Sharrowkyn's eye-lenses before following up with his sword. Aimed at his leg, the swordsman diverted the cut at the last moment, transforming it into a thrust at Sharrowkyn's groin, but Sharrowkyn blocked the sword between his two gladii.Sharrowkyn tried to hammer his elbow into Lucius' face, but the latter had let himself be carried by his momentum, ducking beneath Sharrowkyn's swinging arm while striking out at the base of Sharrowkyn's spine.The Raven Guard had to use his Jump Pack to get himself out of harm's way, interrupting their duel. The roles were now reversed, as this time Sharrowkyn tried to tempt Lucius into attacking him, but as during their first encounter he refused to take the bait.Instead, Sharrowkyn ignited his Jump Pack again, throwing himself on his opponent. Lucius' whip, possessed of a malicious mind of its own, lashed out and wrapped around the Raven Guard's neck, its sharp barbs piercing his armour's collar seals and even drawing blood, but that did not stop Sharrowkyn.Still flying, Sharrowkyn parried Lucius' sword with his gladii, the block just enough to let the sword tip graze his armour's Ceramite before impacting with his opponent. His enemy relished the clean and honourable kill of a duel, so Sharrowkyn turned their fight into a brawl.Too close for bladework, both warriors exchanged blows with their fists, rolling violently on the floor until Sharrowkyn made his decisive move. With typical arrogance, Lucius had removed his helmet, an error Sharrowkyn would not let go unpunished. Headbutting the swordsman, Sharrowkyn broke the Traitor's nose, blood flowing freely into Lucius' eyes.The swordsman tried to anticipate the Raven Guard's moves, thrusting and striking where he supposed his enemy would be to deliver the killing blow, but Sharrowkyn wraith-slipped and eluded all of Lucius' attacks. Lucius relished the first wound inflicted on him by Sharrowkyn, a blade thrust into his flank, savouring the exquisite feeling of pain, but soon changed his attitude when Sharrowkyn's second blade cut into his back.The next blow gave him a new scar on his cheek, one to mirror the one taken during their first duel as Sharrowkyn mercilessly continued to dance around Lucius. His strength slowly ebbing away, Lucius knew the end was near. Sharrowkyn appeared behind the swordsman, pushing him to his knees, poised for the final strike. Both black blades were now on Lucius' neck, their tip nestled into the hollows between collarbone and throat."It gives me no pleasure to do this," said Sharrowkyn. "You are nothing to me, simply a rabid dog that needs to be put down," he continued, before thrusting both his blades into Lucius' ribcage. With no time to savour his victory, Sharrowkyn took possession of the Maugetar Stone, contemplating what to do with it.Perturabo, who was locked in a duel with his brother, had tried to deny it to the Emperor's Children, which sort of made him an ally in this struggle. However, Fulgrim was clearly gaining the upper hand.Knowing that no one except another Primarch could oppose a Primarch and hope to live, Sharrowkyn did the only sensible thing: He destroyed the Maugetar Stone and released its energy so that Perturabo might be restored. Seizing the Bolt Pistol of Lucius the Eternal from his cold corpse, Sharrowkyn blasted it apart with precise shots.As soon as the stone was shattered, its life energy was released, flowing back into its rightful owner. Thus strengthened, Perturabo fought back, his hatred for his brother's duplicity and treachery empowering him further. Hefting Forgebreaker, the mighty warhammer gifted to him by Horus Lupercal, Perturabo struck down Fulgrim.It was, however, exactly what the degenerate Primarch of the Emperor's Children had hoped for. As Forgebreaker destroyed the Primarch's physical body -- the only anchor he still had in the physical realm -- the ritual was completed and Fulgrim was reborn as a Daemon Prince of Slaanesh.The energy released by this transmutation was enough to shatter Iydris, great cracks appearing in the planet's crust, forcing both the Iron Warriors and the Iron Hands to promptly leave this doomed world.Of the Emperor's Children no trace could be found, each and every one of them having vanished at the same time their Daemon Primarch had opened a portal into the Warp and stepped through it.While the Sisypheum's remaining gunships came down to extract the battered survivors, Sharrowkyn quickly recovered Garuda before returning its broken form to Captain Tyro. With all haste the Sisypheum departed the doomed world of Iydris. The Crone World was slowly sucked into the Warp rift, while everyone onboard hoped that this baleful celestial body might also sign the death warrant of the Iron Warrior's fleet.