Amon - Early Years: When Magnus came to Prospero, it was said that a great comet had borne him to the ground, for the impact he had on the people of Prospero was as great as his impact upon the planet's crust. The Tizcan commune, which was the name the survivors of the assault of the vile Warp entities known as the Psychneuein gave to their little enclave, was a place rooted in tradition, but they had some skill in wielding the power of the Æther.Of course, they did not know it by that name, and the powers they had, while enough to keep the psy-predators at bay, were little more than the enchantments of idiot children. The young primarch was schooled in the ways of the commune, and he quickly learned everything they had to teach. He had endured Amon's tutorials and sermons regarding the power of the Great Ocean (the Warp) on Prospero, while knowing that greater power lay within his reach.Amon had been kind to him, and had accepted the knowledge of his growing obsolescence with good grace, for Magnus outstripped him in learning and power at an early age. Yet, like the Emperor of Mankind would at a later time, Amon had warned Magnus of peering too deeply into the Ocean's depths.In truth, Magnus had outstripped the learning of all the Prosperines' greatest scholars within a standard year of his arrival. Their teachings were too dogmatic, too linear and too limiting for the potential of a primarch's mind. His intellect was superior in every way to those that taught him. With his teachings, he knew they could be so much more.To increase his understanding of his powerful psychic abilities, Magnus took a walk into the desolation of Prospero. True power comes only to those who have fully tested themselves against their greatest fears. Within the commune of Tizca, the primarch knew no fear, no hunger or want and had no drive to push his abilities to their full potential. Magnus needed to be tested to the very limits of his powers to see if he even had limits.Out in the wilds, Magnus knew he would either find the key to fully unlock his powers or die in the attempt. A year after his coming to Prospero, the primarch walked from the gates of Tizca and marched into the wilderness for nearly forty solar days.Through his observations, Magnus learned to harness his powerful abilities during his long trek. He had already begun his second grimoire when Amon had come upon the young primarch squatting amongst a carpet of stones fallen from a ruined statue, the remains of Prospero's past.Amon was much moved and began to write poetry about each of the incredible designs and patterns of the shattered stones. Magnus believed that there were hidden designs amongst the shards of rock there, the workings of the universe laid bare. Together, Amon and Magnus returned home, where he read his poetry, and the primarch showed the masters of Tizca the workings in his grimoires.So amazed were they that they joined Magnus on a pilgrimage back to the cliff where the remains of the fallen statue were located. The shards were just as he had described them, and the masters of Tizca were overcome with emotion, filling their own grimoires with fantastical writing. Some wrote about triangles, others described the circles, while yet others concentrated all their attention on the glittering spectrum of coloured stones.Temporarily lax in their mental discipline, the Psychneuein were drawn to the large commune of psykers in Tizca in their thousands, blackening the sky with their numbers as they descended like a plague from ancient times. They swarmed from their darkened caves, organically shifting clouds of deadly clades, the relentless buzzing of thousands of crystalline wings representing the sound of inevitable doom.The males swarmed in, a hurricane of snapping mandibles and tearing claws, and fifty men died in the time it takes to draw breath. Behind the males came the females, engorged with clutch upon clutch of immaterial eggs. Their furious reproductive hunger was insatiable, and dozens of the primarch's friends fell to their knees in horror as they felt the Psychneuein eggs take root in their brains.The beasts swirled around them, battering the Prosperines with psychic thrusts, scrabbling at their mental barriers to seed their minds with their eggs, and only the strongest of them remained. Amon and eight of the psychic masters of Tizca stood with the primarch, and as the Psychneuein attacked again, Magnus knew this was what he had been seeking all along, a true test of his abilities. He would finally discover whether he had limits. Magnus would see if he was the master of his powers or was to be found wanting.As the Psychneuein came at the Prosperine defenders again, something magnificent happened. The primarch felt something move within him, feeling changed, as though an immense power that had lain within him, dormant and untapped, surged to life. As Magnus contemplated the moment of his death, raging fires erupted from his hands.The primarch hurled torrents of flame into the sky, as though he had always known he had such powers, and smote hundreds of Psychneuein to ruin with every gesture. Soon, the other Tizcan masters displayed hence-unknown abilities as well, as walls of flame sprang up at their mental command. Others were able to pluck beasts from the air and dash them on the rocks with the power of their minds. Still other defenders were able to will the vital fluids within the Psychneuein to boil within their exo-skeletons.Amon saw images of the future and imminent danger seared though his mind, and he cried words of warning to his fellows, telling them of dangers to come and of how they might avoid them. Some of the other defenders sensed the lust within the Psychneuein to plant their psychic seed within the humans' minds, the relentless animal hunger that drove them to feed and propagate.They reached into the minds of the beasts and twisted their perceptions so that they became blind to the humans. With these newfound abilities, the later psychic cults of the Thousand Sons Legion were born.