CRACK!
The exact millisecond the spatial fracture split open, a sharp snapping of fracturing bones echoed from the four arms Sarah used to grip the hilt.
The spinal greatsword, having fulfilled its strategic mandate as a psychic vessel and delivery system, began to disintegrate inch by inch from the apex down. Its remnants dissolved into grey ash, scattering across the turbulent, violent air currents whipped up by the impact against the barrier.
The decisive trump card forged through the life-sacrifices of three Maguses could, in the end, manage only these two all-out slashes.
Sarah's physical form cascaded downward under the pull of gravity, her grey robes snapping violently against the raging updrafts. The Chosen chassis had long transcended its structural limits; its neural pathways were completely severed, its muscle fibers dissolving, and even the basic capacity to sustain a elemental psychic aegis was hemorrhaging away at an exponential rate.
Yet her violet eyes remained flawlessly flat. Her descending gaze swept across the bewildered Luna on the floor below, bypassed the seven poised Chaos Knights, and ultimately anchored onto the progressively expanding fractures scoring the dome above.
It was enough.
This single strike had successfully driven a mortal fissure through that unyielding tortoise shell. The core catalyst to shatter this stalemate had officially been engineered.
"Useless trash!"
Luna's shrill register punctured the dead silence enveloping the interior of the array. She stared at the fractures spiderwebbing rapidly across the dome, her heart thumping frantically against her ribs.
She had never anticipated that her Nine-Sided Spirit-Sealing Array, an intricate masterwork she had meticulously researched and refined for so long, could be forcibly breached by a xenos creation completely severed from its hive nexus consensus.
She abruptly hoisted her sorcerous staff, which was embedded with multifaceted crystals, the blue gemstone at the apex erupting with an blinding, ghostly glare. Countless twisted Chaos runes spread outward from beneath her boots, climbing up the interior bulkheads of the barrier.
These runes behaved like a swarm of flesh-eating maggots catching the scent of fresh blood, surging frantically toward the fractures in a desperate bid to re-cement the disintegrating bulwark.
"Attempting a breakthrough? It will not be that simple!" Luna's voice trembled slightly under the sheer exertion of the spellcraft, the corners of her mouth beneath her hood compressed into a rigid, taut line.
If she could secure a mere dozen minutes—no, simply a handful of minutes—she could systematically stabilize the array's framework and permanently trap this dying insect within the perimeter.
Yet she had overlooked a critical operational metric.
While the temporal flow within the array was decelerated a hundredfold, a substantial duration of real-time had already elapsed in the universe beyond the barrier.
Beneath the dome of Castle Sanctus Gallus's third subterranean sub-level, a dense matrix of heavy fire positions had long been established across the winding stone staircases.
Raynor stood dead center on the primary command platform, his boots planted firmly amidst scattered rubble and fractured metal structural components, a tactical terminal locked in his grip. On the terminal's display, the energy parameters of the Nine-Sided Spirit-Sealing Array cycled in steady intervals, flanked by the piercing, high-contrast values of the temporal deceleration ratio.
For every single second that elapsed within the interior, nearly two minutes ticked away in the external theater.
From the precise frame the Vanguard Vanguard-Line had arrived outside the barrier to the millisecond Sarah split open the first structural fissure, two hours of real-time had already passed in the material universe.
Two hours. More than enough duration for the Vanguard's Combat Engineer Battalion to anchor twenty-seven heavy fire points across this sector.
It was ample time to bring twelve twin-linked heavy bolters, eight melta-annihilator cannons, and fifteen plasma battery arrays fully online and into position. Every single gunner had already calibrated their fire parameters, locking their targeting optics squarely onto the dome sector where the array's energy profile was at its densest concentration.
"Raynor, the fissure has manifested," a cold, smooth voice resonated within Raynor's consciousness.
Raynor raised his eyes accordingly toward the ghostly blue dome of the array below. Sure enough, a deep purple sword-scar had sheared through the polished surface of the bulwark, the fractures branching outward at a velocity visible to the naked eye.
He exhibited not a single fraction of hesitation, his arm snapping downward in a sharp, decisive sweep:
"All batteries, full-throttle saturation fire. Break it open."
The exact millisecond the mandate was issued, every single ordnance muzzle simultaneously spat tongues of incandescent fire.
Starship-grade macro-cannon armor-piercing shells dragged dark red exhaust trails through the air, slamming squarely into the margins of the fissure. The resulting explosive shockwaves subjected the already compromised barrier walls to violent, resonant tremors.
The orange-red thermal beams of the melta cannons impacted the identical coordinate with surgical precision, the multi-thousand-degree thermal output causing the ghostly blue energy wall to emit a sharp, sizzling sound as it dissolved. Plasma projectors discharged successive arcs of blue ion energy, the detonating kinetic ripples hammering the array's framework repeatedly like a heavy forge-press.
The thundering roar of the artillery echoed back and forth through the cavernous subterranean hall, the vibrations knocking loose cascades of dust from the stone staircases. The brilliant flash of detonations flared in rapid successions, painting Raynor's austere profile in shifting contrasts of light and shadow.
Within the interior of the array, catastrophic tremors cascaded down from the dome, as shattered fragments of pure energy began to rain down incessantly like shards of broken glass.
Luna snapped her head upward, her complexion instantly turning deathly pale as she watched the barrier walls cave inward under the relentless bombardment of artillery fire.
There are forces outside!
The Vanguard had actually brought heavy ordnance to blockade the exterior of her array!
She frantically channeled her reserves into the staff, attempting to reinforce the dome's defenses, but caught in a vice-grip between internal and external vectors, the expansion of the fractures failed to decelerate—instead growing exponentially faster. The millisecond the ghostly blue runes were layered onto the structure, they were blown into molecular fragments by the external artillery, failing to sustain cohesion for even half a second.
"Dammit, dammit!" Luna spat through gritted teeth, her fingernails digging deep into her palms.
She recognized that the array was entirely unsalvageable. If she continued to bleed assets here, the exact millisecond the barrier underwent total structural failure, the external batteries would level this entire sector, reducing her to unrecognizable ash alongside it.
But she, Luna Sanctus Gallus, was never short on hidden contingencies.
She retracted her staff, completely abandoning the faltering barrier, and instead floated back toward the sorcerous altar positioned behind her frame. Beneath her mask, a manic, unhinged light rolled through her eyes, yet her lips curled into a twisted, deformed smirk.
Since you are so eager to break out, I shall ensure an extraordinary welcoming gift is waiting for you.
However, this specific energy fluctuation was instantly registered by Sarah.
"Raynor, Luna has abandoned repairs on the array."
"She is initiating some manner of warp ritual. The energy signature is exceptionally high."
Sarah's voice drifted through the soul-link into Raynor's consciousness once more, carrying an imperceptible trace of structural exhaustion. She was currently suspended mid-air, relying entirely on the final remnants of her psychic mass to anchor her posture, feigning that she still possessed the capacity to wage combat. In reality, she lacked the strength to even raise an arm, forced to watch the runes across the altar ignite one after another.
"Ritual completion parameter?" Raynor's voice resonated in her awareness instantly, devoid of any panic.
"Uncertain, but it is approaching critical velocity, and the acceleration is ramping up."
She calculated the internal metrics mentally before adding:
"Before the barrier undergoes complete structural failure, the internal temporal flow still maintains a tenfold deceleration differential. By external temporal standards, you have less than ten minutes remaining."
Ten minutes.
Raynor's gaze swept across the ten Pestilence Apostles who had long been standing at absolute readiness by his flank.
These apostles differed fundamentally from standard grey-robed cultists; their physical frames were significantly more massive, and dark purple blood vessels bulged prominently beneath their skin. The psychic cores within their chest cavities had been artificially catalyzed to their absolute limits—they were specialized "psychic detonators" bred by Sarah specifically to counter energy barriers.
Every single detonation yielded an explosive mass equivalent to a Beta-level psyker undergoing catastrophic, unmitigated burnout, possessing an exceptionally lethal disruptive effect against structured energy frameworks.
"Go," Raynor uttered, restricting his command to a single phrase.
The ten apostles bowed in perfect unison, offering no final words, betraying not an ounce of hesitation. They turned and vaulted cleanly off the towering fire platforms, resembling ten dropped munitions as they plummeted straight toward the fracturing barrier below.
The wind roared into their voluminous robes, whistling sharply like inbound missiles.
When a mere handful of meters remained between them and the barrier wall, a blinding purple glare erupted simultaneously from the chests of all ten individuals.
BOOM!!!
Ten deep-purple psychic fireballs detonated in rapid succession across the exterior face of the barrier, the rabid psychic shockwaves slamming brutally into the already hollowed-out bulwarks.
With macro-cannons and meltas maintaining a continuous battering from the outside, the fatal fissure carved by Sarah compromising the inside, and the localized demolition patterns of ten Beta-level psychic self-detonations compounding the structural failure, the Nine-Sided Spirit-Sealing Array finally reached its absolute terminal limit.
External real-time: nine minutes and fifty-eight seconds.
CRACK... BOOM!!!
Accompanied by a world-shaking, deafening roar, the ghostly blue walls of the array shattered entirely.
Countless fragments of raw energy converted into a torrential downpour of luminescent rain, scattering across every quadrant of the dim subterranean hall, unleashing a brilliant, cascading storm of blue light.
Yet within the interior of the array, operating under a tenfold temporal deceleration, Luna had still secured a buffer window of nearly ten full minutes.
The exact millisecond the final fragment of the barrier shattered against the deck, the sorcerous runes tracing the center of the altar simultaneously flared into life.
Luna hoisted her staff high into the air, letting loose a manic, unhinged cackle toward the high ceiling.
"Too late! You are all too late!"
Directly within the void behind her frame, a five-meter-tall warp rift tore open with a violent roar.
Across the perimeter of the fissure, multi-colored chaos energies surged in turbulent waves—a bloody, visceral crimson; a putrid, decomposing green; a rapturous, intoxicating pink; and a fickle, deceptive blue. The four distinctly separate currents of warp resonance interwove, forging a twisted, crushing aura of absolute oppression.
Furious roars, shrill screeches, and manic, warped laughter spilled from the deep recesses of the rift, carrying the unmitigated insanity and sadism unique to the Immaterium as they washed over the chamber.
The vanguard to breach the threshold was a pack of blood-drenched Flesh Hounds of Khorne. Possessing canine-like frames, with boiling gore dripping from their maws and bloodthirsty crimson light flickering within their eye sockets, they let out excited whines the instant their paws touched the deck. These were the extensions of the Blood God, perpetually hunting for slaughter and viscera.
Following immediately in their wake were bloated Plaguebearers, dragging their pus-oozing chassis forward, leaving trails of corrosive slime with every single stride. Buzzing swarms of Rot Flies trailed them closely, filling the air wherever they passed with a sickly sweet, nauseating stench—the children of Grandfather Nurgle.
Several slender, seductive silhouettes glided out along the margins of the rift. They possessed nearly flawless human female contours, yet their skin radiated an unnatural pinkish-purple hue. Gripping bizarrely forged instruments of torment and venom-coated short blades, their eyes brimmed with a volatile synthesis of flirtation and cruelty—the fanatical Marauders of Slaanesh, absolute masters at harvesting souls amidst the crossroads of pleasure and agony.
Deep within the cavernous depths of the fissure, swarms of Pink Horrors and Flamers floated outward, cackling and jabbering in bizarre registers. With arcane fire dancing at their fingertips, these were the daemons of Tzeentch.
Furthermore, a Soul Grinder heavily plated in brass armor strode forth with thunderous steps, chaos fire flickering within its ordnance barrels.
The daemons of the Four Powers had gathered under a single roof.
The exact millisecond they stepped out of the warp, the daemons of differing factions instinctively glared at one another. The hounds of Khorne bared their fangs in low, threatening growls toward the Nurgle beasts, while the Seekers of Slaanesh cast contemptuous glances across the clumsy Plague Toads. Nearby, the Horrors of Tzeentch hopped eagerly, tossing out instigating remarks to provoke the other three factions into open warfare.
The Great Game was hardcoded into the consciousness of every warp entity; even when summoned under a unified protocol, their primal instinct upon meeting was to tear one another to pieces.
Yet after a single frame of hesitation, the heads of every single daemon simultaneously snapped toward the human fire positions established around the perimeter of the hall.
Fresh souls.
Boiling flesh.
Fury, desire, avarice, dread... human emotions and souls comprised the supreme delicacies that the daemons of the warp coveted above all else. Compared to a domestic feud with ancient rivals, these arrayed mortal companies were a vastly more enticing quarry.
The Flesh Hounds let loose excited howls, pioneering the charge. The Rot Flies drifted unsteadily behind them, spilling toxic mists along their trajectory. The silhouettes of Slaanesh converted into blurred afterimages, flanking toward the margins of the defensive line. The daemons of Tzeentch hovered mid-air, arcane missiles already condensing at their fingertips.
"Do you witness this, Raynor?!"
Luna floated along the flank of the warp gate, her staff tapping lightly in rhythmic intervals to stabilize the rift's matrix. Watching the daemonic horde pour outward like a rising tide, the smile beneath her mask grew profoundly smug and frantic.
"This is my third hidden card,"
"The Gate of Scourge!"
"The sorcery of the Architect of Fate, the fury of the Blood God, the pestilence of the Grandfather, the torment of the Prince of Pleasure..."
"The boons of all Four Powers—I have prepared them all for you!"
Her prolonged dormancy beneath the underhives of Sanctus Gallus had yielded far more than a few corrupted knight frames. Under the cover of the hive-city plague, she had spent half a year constructing this trans-dimensional threshold within the deepest recesses of the third subterranean sub-level. She had no requirement to open it entirely; merely tearing a temporary breach was sufficient to permit a ceaseless torrent of daemons to flood into realspace.
An army composed of a multi-factional daemonic blend was vastly more complex to counter than the forces of a singular dark deity.
The units of Khorne anchored the vanguard, despising ranged fire and viewing psychic sorcery with absolute disdain, charging solely on raw flesh and frenzied martial intent. The brass cleavers wielded by Bloodletters could cleanly shear through ceramite plating, while the ordnance shells fired by the Soul Grinder blasted apart entire infantry sections whenever they struck a defensive position. They defied death completely; even if heavy bolter rounds obliterated half their torsos, they would crawl toward the nearest human, using their teeth and claws to carve out a final wound.
The daemons of Nurgle operated as mobile bio-weapons. The toxic miasma spewed by Plaguebearers could corrode both mortal flesh and spiritual essence. Beasts of Nurgle crashed rampantly into the defensive formations, their decomposing mass creating localized zones of absolute mortality whenever they ruptured. The sky-devouring swarms of Rot Flies blotted out the light, the corrosive fluids dripping from their mouthparts sizzling as they melted craters into the floor plates. Furthermore, countless Nurglings hopped and skipped amidst the formation; these miniature blessings were unassuming yet equally lethal, causing immediate necrosis upon the slightest contact with skin.
The forces of Slaanesh moved like a series of malicious shadows. They abstained from frontal charges, perpetually utilizing the ambient chaos to flank the margins and rear of the lines, severing throats with venomous blades and fracturing minds with hypnotic whispers. Numerous soldiers lost focus for a single second upon catching a glimpse of their seductive silhouettes, only to have their hearts pierced by razor-sharp steel the next.
Meanwhile, the daemons of Tzeentch securely occupied the rear fire positions. The arcane missiles of the Pink Horrors hammered heavy fire points with surgical precision, while the warp-fire of the Flamers poured out incessantly. A shifting, unpredictable array of chaos sorceries manifested without pause—either summoning localized spatial tears out of thin air or converting the floor beneath the soldiers' boots into quicksand, bypassing conventional defenses entirely.
"Hold the formation! Heavy ordnance suppress the vanguard, infantry firepower lock down the flanks!"
The officers of the Vanguard roared at the absolute limit of their lungs, attempting to stabilize a defensive line that was buckling under the strain.
The roar of bolt weapons unified into a continuous chorus, a dense matrix of firepower pouring into the charging daemonic mass like a torrential downpour. The Flesh Hounds holding the front line were torn into molecular slurry, yet the daemons behind them stepped over the remains of their kin to maintain the charge, their velocity failing to decrease by even a fraction. The primary battle cannons of the Leman Russ tanks thundered steadily, vaporizing a Beast of Nurgle into a fountain of putrid slime. Yet the moment that airborne fluid splattered across the front-line infantry, acrid white smoke and agonizing screams erupted simultaneously.
Providentially, the vast majority of these daemons lacked flight capabilities, forcing them to scale the winding spiral staircases to breach the maze-like surface. Furthermore, dozens of Pestilence Maguses had long since projected an localized aegis formed by the Shadow in the Warp directly ahead of the positions.
The pale purple psychic barrier functioned as a massive filter, intercepting the ambient warp corruption, cognitive whispers, and plague spores entirely. The soldiers remained insulated from the deceptive murmurs of the entities, immune to the hallucinatory mazes of Slaanesh, and protected against immediate infection by Nurgle's spores.
This comprised the absolute lynchpin of Raynor's defensive strategy.
Yet even backed by this countermeasure, faced with a daemonic horde pouring ceaselessly from the Gate of Scourge, the human lines continued to systematically yield ground. The casualty metrics climbed at an alarming velocity, and heavy fire points were dismantled one after another by the daemonic advance. Soldiers emptied magazine after magazine, the mounds of corpses beneath their boots growing taller by the second, yet the horizon of the daemon tide remained entirely out of sight.
Standing at her high vantage point, Luna watched the progressive retreat of the human army, her laughter growing louder and more resonant.
She intended to see precisely what hand Raynor could play to arrest this hopeless cataclysm.