The first five of the Forge-Master's attempts at improving upon the human genome had been iterative. The epsilon series made for excellent troops, more than capable of overcoming any small rebellion, but they lacked the decisive quality that would ensure the Forge-Master's dominion over Jahannam. But then had come the case of foreign gene-samples, and one in particular that resembled nothing the Forge-Master had seen in its millennia of existence. Even amidst all of the other strange and exotic alterations pilfered from the Spider's lab, that one was unique, bearing the fingerprints of long work to produce the ultimate combination of genetic adaptability and capability.
The Forge-Master began to cut a new path. The first few attempts to integrate its own work with the foreign sample were abortive, quite literally, the flesh collapsing well before the clone soldiers could be decanted from their vats. The iota series was the first group to breathe Jahannam's toxic air, and the Forge-Master was quite proud of them. But not proud enough. There were more improvements to be made. The lambda series made the epsilons look almost quaint, their strength and durability surpassing even that of an Astartes. They were the first to be mass-produced, lambda-series clones serving as the Forge-Master's agents all across the planet, acting as field commanders for the skitarii armies and military advisors to the Archons.
Still, the Forge-Master was not satisfied. The lambda clones used only a few key sequences taken from the foreign sample. What could be created if the two works of bioengineering were combined on a more even level, the foreign sample making up fifty percent of the final product, sixty percent, seventy?
The mu series was a horrible disaster, and not for the reason earliest pre-lambda experiments had been. The flesh was functional, the two genetic codes almost wanting to combine, but the end result was utterly insane, riddled with strange impulses and driven to a total disregard for instruction. None of them survived longer than a decade, and even then only ever in a jail cell. It was only in the sheer number of obliterated servitors left behind by the rebellious mu series that the Forge-Master found any reason at all to continue. But continue it did.
The nu series was an overcorrection. Neurological modifications intended to induce compliance left them listless and unfocused, as though drugged. Only through pain could they be induced to take any action beyond that which faintly amused them in the moment. Worse, they quickly grew sickly, their bodies overrun with inexplicable cancers. The Forge-Master spent three years in its lab before producing the next series; but this one was special.
There was only a single clone produced, a single prototype whose success or failure would set the fate of his siblings. He was designated Ξ-1, but he quickly took to pronouncing his name as "Ksaiwon" in informal contexts, a tendency which spread rapidly amidst the forge-priests who raised him.
Ksaiwon was physiologically perfect. Within two years he could walk easily, and by the age of four he had settled into the smooth exactness found only in those whose mind and body are in absolute, perfect coordination. He was functionally immune to infection, highly resistant to toxins, possessed of strength so great as to be difficult to measure. He mastered low gothic in a matter of months, and by the end of his first decade had taught himself eleven languages, motivated by nothing more than boredom.
It was at seven years old that Ksaiwon was first taught the art of combat. He took to it like a fish to water: his first kill was within twenty-five days, when he decommissioned a training servitor with a power knife. By age nine, it had become effectively impossible to keep up with Ksaiwon's ability to tear through sparring partners in any reasonable way; for some time, it became fashionable in Siderium to sentence traitors to survive sixty seconds within a sparring circle with the boy. Suffice it to say that few completed their sentences.
By the time puberty arrived, Ksaiwon was better-prepared for war and politics alike than most imperial governors. But to say that puberty "arrived" would be an understatement. More accurate to say it "struck", in the way a hurricane strikes a low-lying coastal village, arriving swiftly, irrevocably altering the terrain, then vanishing just as quickly. Ksaiwon's altered biology made him from a boy into a man in a matter of less than half a year, leaving a wiry, pale, muscular figure some one-hundred and ninety centimeters tall, with eyes like emeralds floating in a sea of milk and hair the color of crystalline sulfur. Not that anyone was going to be seeing that hair; Ksaiwon was still, in the end, a skitarius.
Indeed, he was, in some sense, the skitarius. On his thirteenth birthday, the Forge-Master at last saw fit to give the clone a role within the arcane structures of Jahannam as more than just a favored experiment. He held two titles. The first was Skitarius Prime, ultimate commander of all those soldiers of plasteel and synthetic tissue. The second, far more important, was Fifth Claw. On that day, Ksaiwon became, for all intents and purposes, an extension of the Forge-Master's will, beholden to none but that cyber-crustacean overlord of Jahannam, scourge to all forge-priests who would dare to believe that they held any power beyond that granted to them by it.
The ultimate symbol of this power was also the one and only birthday present the Forge-Master ever gave to its child: Claw, a custom-constructed lightning gun of immense power. Ksaiwon never allowed it to leave his sight.
So it was for nine long years that all within the Eye of Terror and beyond had cause to fear the armies of Jahannam, and most of all its champion. Ksaiwon passed by the ruins of Cadia a dozen times, and on each raid reaped a great harvest of bodies and blood, bringing back to his master more plunder than the Forge-Master knew what to do with. More than the servants of the False Omnissiah, though, he was a terror to the inhabitants of Jahannam itself. In the chaotic power plays of the forge-priests, always warring for the right to become Archon, the Fifth Claw rapidly became the ultimate hammer. To incur his wrath was unavoidable doom.
But Ksaiwon, in the end, was merely one part of a greater whole, one small spark of chaos in a vast and yawning galaxy. One not-too-large fish in a rather small pond. Eventually the tide rolled in, and suddenly the pond was hardly small at all, and there were much larger fish about. That tide came in the form of a single strike cruiser descending rapidly into Jahannam's atmosphere.
The vessel shoved through waves of point defense las-fire, dropping off a company of Thousand Sons on one of the outer manufactories. Such raids were to be expected; Ksaiwon and his elite macroclade of epsilon clone-skitarii were dispatched at once, but there was little panic in the commanding officers of Jahannam. The Astartes would be beaten back eventually, the only question being how much material and how many slaves they would capture before being overwhelmed. But the canny sorcerer in charge of the raid had an entirely different plan of action in mind.
The first sign that anything had gone wrong came hours after the beginning of the invasion. Ksaiwon and his macroclade were locked away in the bellies of a swarm of Exokoitos Drill-Carriers, swimming through the red-hot rock of Jahannam's lava seas. The Exokoitos earned its name after the flying fish of old Terra, whom it mimicked by occasionally launching itself from the rock to soar, momentarily, through the air. It was during one of those leaps that, through the monoquartz windows, the sky of Jahannam could be seen to glow with a blue light.
Moments later, the weight of the spell pressed down upon every soul on the planet. There was a throb of mutation, thousands of lives reduced to spawn or worse, and even within the advancing army several Exokoitos were overwhelmed with violence as skitarius turned against skitarius. But this was not the purpose of the spell: the lava sea's surface split, and with more ferocity than any eruption that had been seen upon the surface in a million years, vast curtains of flame and gas vented forth into the air.
The order was given to push the daemonic engines of the Exokoitos to their limits, a mad dash for solid ground. Visibility was nearly extinguished, and it became safer to travel under the rock, seeking shelter from the growing power of the spell's fire. Those few pilots who dared breach saw that the awfulness had only just begun.
The flame was not flame, not ordinary flame, not sensible. It had turned into a cavalcade of a million colors and begun to twist about itself. There were leering eyes within the fire, and gouts of flame that separated themselves from their sources to caper and gambol across the burning hot stones. It was not merely an obstacle, but an army, summoned from flame and given form by the sheer power of the occult spell.
As soon as the bulk of Ksaiwon's army had reached the shore, they found themselves cornered. To attempt to advance in the direction of the Thousand Sons would be foolish, as they would inevitably find themselves pinned between the Astartes before them and the daemons behind. Thus, the only sensible action was to vox for help, and take a stand. The Exokoitos surfaced, disgorging the macroclade, who rushed into a standard defensive formation aimed at the lava-sea behind them. They moved with absolute surety and precision, even with the mutation losses they had already taken, and not a skitarius showed an ounce of fear.
The daemons arrived before the formation was complete. They came in a swarm, spinning and twirling and unleashing gouts of enchanted fire as they cackled and gibbered meaningless false prophecies. As one, the skitarii responded with all the strength they possessed. Plasma and transuranic shells tore through the air, and before long the buzz of lightning guns firing in coordinated volleys had ascended to an almost deafening crescendo. The largest daemons, geysers of flame that turned black-iron and ceramite into vapor, were met with the power of the sideric devastators, heavy armored figures bracing themselves against the cracked ground before opening up with thudding accel guns and the invisible pinpoint death that was volkite.
And it was all for nought, for it was not creatures of mortal matter which they fought. Nightmare bolt-shells passed through the immaterial bodies of the daemons without slowing, and neither lightning nor plasma nor volkite could seem to do more than briefly disperse them. Inevitably, wherever the daemons went, entire lines of skitarii burst into incandescent flame and slowly guttered out. They could fight to the last man and still hardly slow them down.
Ksaiwon saw all this, and found himself caught between the preservation of his men and, looming over his shoulder, the impending disapproval of the Forge-Master should he retreat. Thus, he gathered up his personal guard, and tried for one last push before the inevitable shame of a fighting retreat. And he knew exactly the target for this push, because in the midst of the daemonic host, he saw one creature who made for a more solid target. The flame condensed into bluish flesh, a winged figure five meters in height, slender and agile. It danced through the lines of the skitarii with its many talons, and by the way it shouted at the other daemons in an unfamiliar tongue, Ksaiwon assumed it to be the enemy commander.
So Ksaiwon, with about forty of his most loyal soldiers, pushed forward into the daemonic line. They fought with perfect coordination, saturating any daemon that came close with such a volume of lightning-gun fire that they were blasted into warm mist. Even still, even with Ksaiwon at the lead fighting with all his ferocity, they were picked apart one by one. By the time they were close enough to level fire upon the daemon prince, less than ten remained, Ksaiwon included.
And yet still they fell into firing positions and unleashed against the daemon prince everything they had. The daemon's flesh could be seen to burst open, boiling and shredding under the onslaught of lightning and plasma guns, but it hardly even seemed to care, not bothering to cease its mad rush of tearing flesh and buckling metal. Just as it began to slow, however, just as the possibility of victory flared within Ksaiwon's chest, it all went wrong. The skitarius next in the firing line to the Fifth Claw was armed with a plasma gun. Said plasma gun chose that exact moment to have a malfunction and detonate.
Ksaiwon was thrown to the side by the blast of red-hot gas and momentarily discombobulated. The same happened to others all up and down the line, a moment's hesitation brought on by the sudden fatality. Seeing their commander knocked aside brought a momentary shock of fear to the fearless skitarii, costing them their discipline of fire.
All at once, the daemon prince turned. It was as though it had been aware of them all along, and merely choosing to wait for the inevitable moment when its foe was humiliated to take care of them. Its lips parted, and as it raised one finger to point directly at Ksaiwon, an unnervingly feminine laugh escaped from its mouth. Ksaiwon reached for his weapon, ready to charge, but it was already too late.
A bolt of blue-white fire, like Jahannam's red-orange star had been brought down onto its surface, leapt from the daemon prince's finger and launched towards Ksaiwon. He had the chance only to see a brief and blinding flash before it struck. The fire burned precisely and with absolute destructive force, passing through his armored mask as though it did not exist, and turning the left side of Ksaiwon's skull into vapor, boiling and charring the brain underneath, sectioning off most of the left lobe and unmaking it from reality. What fell to the ground in the aftermath made for a gruesome corpse, already partially autopsied with the skull open and the brain visible.
And so Ksaiwon died. But death, as it happens, is not always the end.
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There it is, he's dead at last! Finally, now's my chance, I can… Well, shit. No, hold on, I can still work with this, biomancy, it's just biomancy. Never my specialty but I can just… there, like that. Perfect, alright. Now to do the hard part, I can simply… I just have to… Oh gods damn everything, there's not enough! The brain's not enough, the body's not enough, it can't handle the… it can't handle the soul.
I'll have to section parts of myself off. That's going to hurt, isn't it… Okay, no, come on, this is the only chance I'm going to have, it was lucky enough that this happened once. What do I need to keep? The mission. I'll need to know the mission. And my knowledge, my skills, history and technology and medicine and philosophy and combat, everything that will help me bring this to completion, I'll need that too. That should be everything, I think.
No, wait, no, I'll need my morals, too. My attitudes. I don't want to end up doing anything I'll regret, at least not too much.
I won't know who I am. I won't even know why I'm doing all this. Fuck, that's going to be confusing. Scary. Come on, this is the only way, I'll get it all back once its over, I've survived this long, it'll hardly be any time at all. It'll be worth it to be back. Now, all I need to do is cross the gap and do the impossible. Ready… steady… now!