Kassir Vayne
Kassir Vayne was a Human Psi-Warrior Fighter, most notable for being the founder of The House of Sinew and their first Corpus Callosuem. Kassir Vayne, a once-revered Champion Fighter and scholar was renowned for his unmatched strength in battle and his insatiable curiosity about the planes of existence. Kassir believed that the ultimate evolution of a warrior lay not just in the perfection of the body, but in the mastery of the mind; a union that could transcend mortality itself.
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Personal history
Kassir’s journey began in tragedy. His hometown, the village of Battersport was obliterated by a planar rift that unleashed unspeakable horrors upon the world, which was eventually revealed to be the Travesty of Forbidden Knowledge Cthothlast attempting to inspect the rapidly changing lives of mortals. The aberrant creatures; twisting, writhing masses of sinew and eyes, corrupted everything they touched, leaving Kassir as the lone survivor of the massacre.
Desperate to understand what had annihilated his home, Kassir sought the wisdom of planar scholars, delved into forbidden texts, and finally located an artifact: the Shard of Ysradix, a crystal-like shard that pulsed faintly with alien energy. He learned it was a fragment of a Far Realm entity, a sliver of a being too vast and incomprehensible to exist fully in Apa Axas.
Through the shard, Kassir was able to commune with the creature it came from; an entity he would later call Ysradix, the Sinew Eternal. Ysadrix was not a god, nor even a demon, but something beyond mortal comprehension. Its “voice” was a barrage of thoughts, emotions, and sensations that threatened to tear Kassir’s mind apart. Kassir pleaded for understanding, demanding to know why the Far Realm had targeted his world. Ysradix responded not in words, but by flooding Kassir’s mind with its alien essence. For a fleeting moment, Kassir experienced reality as Ysradix did; time collapsed into a single moment, his body was no longer distinct from his surroundings, and his mind was split into a thousand screaming fragments. When the vision ended, Kassir was left trembling, drenched in blood from wounds he had no memory of receiving. Yet, to his horror, he realized that a part of Ysradix had lingered within him, a constant presence whispering truths that no mortal should know.
Though shattered by the encounter, Kassir believed he could wield the power of Ysradix to protect others. He began experimenting, exposing himself to the shard’s energy and mastering the strange psionic abilities it granted him. However, his control came at a price. Each exposure further warped his body and mind. His once-proud form became sinewy and stretched, his skin bearing unnatural patterns that pulsed with psionic energy. Worse, the madness of Ysradix seeped into his thoughts, filling him with visions of impossible geometries, endless voids, and writhing tendrils that hungered for reality itself. He found himself drawn to actions he didn’t understand; arranging objects in meaningless patterns, muttering words in languages he did not know. One day, Kassir’s closest companions, fearing for his sanity, confronted him. But Kassir, consumed by his connection to Ysaradix, lashed out in a psionic fury. When the madness cleared, he found their broken bodies around him. Their dying words begged him to stop before the Far Realm claimed him entirely.
Wracked with guilt, Kassir fled into the wilderness, vowing to atone for what he had done. He realized that no one should have to face what he had seen, nor should anyone have to fight the aberrant horrors of the Far Realm unprepared. Kassir vowed to turn his torment into purpose, embracing the madness to shield others from it. “I will walk the edge of sanity so others need not tread it,” he declared, marking the birth of the House of Sinew.
Kassir gathered others who had suffered loss at the hands of aberrations, training them to channel their grief into strength. Using the Shard, he exposed them to the Far Realm in controlled doses, teaching them to harness its power without succumbing to it, becoming the first Corpus Callosuem. Those who failed became hollowed-out husks, but those who succeeded emerged stronger; both in body and in mind. Though Kassir’s methods were harsh and his sanity precarious, his recruits saw him as a savior. Over time, the House of Sinew grew into an order, its members bound by their shared scars and their mission to protect the world from the Far Realm’s influence.
Kassir eventually disappeared, leaving only a cryptic psionic message etched into the minds of his followers: “The Sinew Eternal whispers still, but its madness is mine to bear. Do not seek me, for I walk where none should tread. Protect this world, and if you must remember me, remember this, I broke so you could remain whole.” Legends claim that Kassir still roams the edges of the Far Realm, a lone sentinel battling its horrors to keep Apa Axas safe. Some believe he became one with Ysradix, while others fear he may return as a herald of the very madness he sought to contain.
The House’s origin is both an inspiration and a warning. Its members are taught Kassir’s story as a reminder of the cost of their power and the dangers of losing oneself to the Far Realm’s influence. They honour their founder by continuing his mission, walking the razor-thin line between salvation and madness.
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