Kasper Ansbach Hawser - Portents of Treachery: As the Horus Heresy approached, Hawser's recurring prophetic dreams became more and more urgent and repetitive. Helwintr, with the help of another Rune Priest, Eada Haelfwulf, set themselves the task of unlocking Hawser's memory. They were determined to uncover whose face Hawser saw reflected in his memory over Terra, as that was the key to identifying the presence spying on Leman Russ and the Space Wolves through Hawser.However, the entity proved too strong for the Rune Priests. Eada Haelwulf was overwhelmed attempting to unmask it, and was transformed into a feral mutant Wulfen by its power. The Wulfen Haelwulf savaged Helwintr and then made for Hawser, and was only put down by a Plasma Pistol shot to the chest fired by the wounded Helwintr.Surviving the terrible wound and recovering some of himself, but still horribly mutated, the Wulfen Haelwulf provided a dire warning he had seen from the thing within Hawser's mind: the truth of the impending treachery of Horus against the Emperor.Jarl Ogvai ignored these relevations as lies from the same daemonic being that had mutated the Rune Priest, and gave Haelwulf the Emperor's Peace. The attempt to discover the identity of Hawser's puppetmaster had failed.Hawser was then summoned to the command deck of the Hrafnkel, the flagship of Leman Russ. Russ had never been in any doubt of who was spying on him. The primarch told Hawser of how his brother Magnus the Red had made an attempt to warn the Emperor on Terra of some impending great treachery using the forbidden power of sorcery, and the Space Wolves had been ordered by the Emperor to bring him to account for this terrible crime against his father's decrees at Nikaea.Hawser reasoned to Russ that, if Magnus had felt the need to warn the Emperor so much as to reveal his violation of the Imperial Decrees at Nikaea, then that must have been indicative of some loyalty to the Emperor in Magnus.But Russ did not agree, and did not trust Magnus, calling him a "meddling warlock." He believed his brother had done everything out of a single-minded need to continue his search for forbidden knowledge.Then Russ spoke not to Hawser but through him, believing that Magnus could hear everything Hawser could. Russ pleaded with Magnus to surrender peacefully. If Magnus were to do so, the coming of the Space Wolves to his homeworld of Prospero would be bloodless.It was a unique offer from the Wolf King, but Magnus either did not hear or did not reply. Russ was then resolved that Prospero would burn and the Thousand Sons Legion with it.As a result of these events, Hawser bore witness to the Fall of Prospero as Leman Russ, fully believing Horus' lies that his brother Magnus the Red had fully turned Traitor, took the full assembled might of his entire Legion to destroy the Thousand Sons and their homeworld.As Prospero was destroyed under the guns of the Space Wolves, Hawser was finally confronted there in the capital city of Tizca by the presence that had used him as a puppet -- it was not Magnus at all but an entity of the Immaterium that called itself the "Primordial Annihilator," most likely a Greater Daemon.It appeared to him as a projection of Horus at first, taunting Hawser with images of the weapon known as the Kinebrach Anathame and promises of Horus' fall to Chaos. Then it peeled off its face and pretended to be the Thousand Sons Sorcerer Amon, although the true Amon was at the side of his primarch in the battle.Finally, the entity took the form of Navid Murza. It claimed to have always been Murza, but Hawser argued with it: a real Human being named Murza must have existed, once. The Daemon, thinking to punish this defiance by "withholding a painless death," advanced on Hawser -- not a memory any more but a very real threat.Hawser, having remembered the Enuncia word Murza had used solar decades before, used it against the Daemon, revealing himself to also be a latent psyker. The psychic force unleashed by Hawser surprised the Daemon and wounded it, granting Hawser an opportunity to call for help from the Vlka Fenryka.But the hellish thing could not be killed by the purely physical weapons of the Space Wolves, and it used their True Names against them as part of the same type of psychic sorcery it had unleashed before, stealing the names from Hawser's own mind.Only Bear (whose true name "Bjorn" had been mistranslated by Hawser into Low Gothic), and Hawser himself, who had never known the true birth name given to him by his slain parents, were able to withstand its Warp-sorcery.Despite Bjorn's resistance, the Daemon was still more than a match for him; it clutched and mutated the Astartes' left hand, thinking to corrupt and toy with him before it killed him. Hawser rescued Bjorn by cutting off the hand and halting the Chaos corruption before it could consume him.This missing hand eventually earned Bjorn the moniker of Bjorn the Fell-Handed, the Astartes who would go on to become the longest-lived Space Marine in the Imperium of Man.The Daemon was only defeated upon the arrival of the Sisters of Silence, who negated its psychic powers so that two Space Wolves Dreadnoughts could pulverise its physical form. Its spirit was sent screaming back into the Warp even as elsewhere on the battlefield Leman Russ broke the back of his brother Magnus over his knee and the Thousand Sons' primarch called upon the Chaos God Tzeentch to transport him and his surviving Thousand Sons Astartes to the Planet of the Sorcerers within the Eye of Terror.Whatever their true motivations, Magnus the Red and his Astartes were now firmly dedicated to the service of Chaos and the overthrow of the Imperium.