[6] Magnus mastered every psychic training program and soon surpassed the greatest adepts of the commune. Amidst a hail of ensorcelled bolts, Veilwalker sprang away, as her kin cartwheeled into the enemy's midst from another direction. Rhinos exploded amidst leaping blasts of psychic sorcery, while Skitarii degenerated into howling mutant flesh as the fires of change washed over them. Aided by triangulatory targeting data transmitted by Archmagos Belisarius Cawl, the voidships rained pinpoint-accurate fire upon the foe. He wore an ornate suit of Power Armour with many engravings and wardings known as the Horned Raiment. The edicts of the Council of Nikaea also created a new position amongst the Space Marine Legions, the Space Marine Chaplain, to uphold the Imperial Truth and help maintain the purity of an Astartes Legion's dedication to the Emperor's commands. [17], Magnus would make his return to the Materium in the closing years of the 41st Millennium upon the snows of Fenris, homeworld of his greatest enemy the Space Wolves. Magnus ultimately planned to use the artefact to resurrect some of his fallen Thousand Sons, and, if possible, to manifest himself in the Materium to lead yet another assault on the Space Wolves' homeworld. Because of the setbacks that had befallen the Thousand Sons and the continuing suspicion of many in the Imperium towards the Thousand Sons' use of psychic abilities and the flaws in their gene-seed, the Primarch and his Astartes developed an extremely close emotional bond. Magnus the Red during his time as the ruler of Prospero. Guilliman's warriors fired back, sending many of their ambushers reeling as their armour was rent and the dust that animated it spilled onto the ground. [6] With the threat removed, Magnus rebuilt many of Prospero's cities, most notably Tizca, which became renowned for its beauty and splendor. Deep laughter rolled around Guilliman, a sound redolent with ancient malice. It is said that alone amongst the Primarchs, Magnus met the Emperor in the Realm Beyond long before they met in the flesh. They raised their Bolters and opened fire, cursed shells roaring up from below to slam into the Imperials. His armour was compromised, its air supply venting and the cold of the void leaking in. Sylandri had one chance, a single moment in which to alter fate. Yet with the Harlequins as both guides and escorts, the Imperial forces were able to proceed unchallenged. This period of peace, prosperity and psychic well-being reflected on the world's population of powerful psykers, and Prospero became known as a planet of physically and spiritually beautiful humans. With his single eye he sees through the Immaterium and realspace alike, weaving the strands of manifold futures and winding them to form a noose with which he can ensnare his enemies. They would strike down every Marine until Magnus had to intervene. The giant moved far faster than even Guilliman could have believed, his ensorcelled glaive lashing out to split the Lord of Ultramar in two. The two Primarchs tumbled across the lunar surface, dust billowing around them, and smashed into the rusted wreck of an Imperial frigate. However, Tzeentch personally intervened and saved Ahriman's life as the Sorcerer was a useful pawn for furthering the Changer of Ways' byzantine plans. Not all of his Battle-Brothers could extract themselves from the fight safely, and more precious lives were lost -- along with the gene-seed within them -- as Space Marines were cut down by the enemy's fire. In this moment of greatest need, Tzeentch came to Magnus and offered to save all that he had wrought if Magnus offered his eternal fealty to the Changer of Ways. Magnus' very essence boiled with psychic potential, to the extent that his physical form seems likely to be more matter of will, or a reflection of a deep spiritual imprint than a mere physical constraint, and those who fell under his cyclopean gaze would feel their thoughts and substance to be no more opaque than glass, and their innermost secrets laid open beneath the Crimson King's stare.