The rusted rebar moaned, a skeletal groan in the fungal wind. Kaelen pressed himself deeper into the fractured concrete, the chill of the ruined wall seeping through his worn tunic. His breath hitched. Three pairs of glowing violet eyes flickered in the gloom ahead. Gloom-Stalkers. Chitinous, hunched horrors. They skittered, a sound like dry bones dragging across shattered glass. Their claws, sharp as razor shards, scraped the ground. They were too fast. His Revenant, Scratch, whined low. The canine construct’s left foreleg hung at an unnatural angle, mangled by a Stalker’s ambush. Black ichor, thick as tar, oozed from the torn seams of its coalesced flesh. “Easy, boy,” Kaelen whispered. His own heart hammered. He could feel Scratch’s pain, a dull throb in his own sternum. The connection was a two-edged sword. The Stalkers fanned out. Their mandibles clicked, tasting the stale air for prey. Kaelen could smell their scent: cold metal and wet earth, mixed with something sharp and undeniably *wrong*. He had only a few charges left in his stun-pistol. Pea-shooters against these things. Useless. He needed a stronger anchor. A fresh vessel. His gaze darted around the crumbling corridor. Nothing. Just more ruin, more decay, more Umbral-laced dust motes dancing in the faint light filtering from a collapsed ceiling. The lead Stalker coiled, its segmented body tensing. It launched itself forward, a blur of shadow and clicking claws. Kaelen fired. A weak plasma bolt splattered against its carapace, sizzling harmlessly. Scratch, despite its injury, lunged. It intercepted the Stalker mid-air, a snarl ripped from its throat of sinew and bone. They collided with a sickening crunch. Scratch’s good leg dug in, but the Stalker’s weight was too much. Its claws scrabbled for purchase, seeking a vital point. Kaelen felt the agony spike through him. He grit his teeth. He couldn’t let Scratch be consumed. Not like this. He squeezed his eyes shut, reaching out, not for his pistol, but for the raw current flowing just beneath the fractured reality. He felt the whispers of the Umbral Bloom, the endless potential of decay. It hummed, a low frequency in his bones. But he needed a spark. A fading flame to ignite the void. --- Then he saw it. A dark, slumped form, half-buried under a pile of rubble. Too large for a human. Too still for a beast of the Bloom. He’d passed it earlier, dismissed it as just another victim of the decay. But now, a faint, lingering warmth. A residual tremor of vitality. A dying echo. A ‘Grave Grubber’. One of the massive, subterranean burrowers. Its shell was cracked, its limbs splayed. Probably caught in an old structural collapse, then slowly eaten away by the Bloom's slow rot. But not quite gone. “Scratch, fall back!” Kaelen yelled. His voice was ragged. He pushed the thought, the instruction, directly into Scratch’s core. The Revenant whined, a sound of protest, but disengaged, limping back to Kaelen’s side, its black ichor trailing. The Stalkers screeched, frustrated. They sensed weakness. But Kaelen had found his chance. He scrambled towards the massive, dying Grubber. Its stench was putrid, a sweet, cloying decay. He knelt beside its massive head, ignoring the buzzing flies. He pressed his palm against the Grubber’s cool, cracked carapace. A shiver ran through him. This was always the hard part. The invasive intimacy. He reached out with his unique sense, delving past the outer shell, past the congealed blood and rotting organs. He sought the spark, the last fading embers of its life essence. He found it – a dim, sputtering light deep within its core. He pulled. Not with muscle, but with something colder, deeper. A parasitic suction. He drew the Grubber’s final vital energy, a thin, shimmering thread, into himself. It felt like cold fire, burning through his veins, yet chilling him to the bone. Simultaneously, he opened himself to the Umbral Bloom. The world around him twisted, vibrated. The air grew thick, heavy with potential. He was a conduit, a funnel. He poured the harvested essence into the hungry emptiness of the Bloom’s echoes. He didn’t just combine them; he *fused* them. He shaped the essence, guided the Bloom’s chaotic will. He needed strength. Resilience. And a way to deal with the speed of the Stalkers. The Grubber’s colossal form shuddered, then went utterly slack. It was a husk now, truly dead. Not just biologically, but existentially void. Its echo had been harvested. Behind him, the Stalkers charged again. Their screeches were closer now, enraged. Kaelen ignored them. He focused. He saw the form in his mind’s eye: a hulking brute, carapace-plated, with thick, pounding limbs. Something that could take a hit and dish one out. The air around him rippled. Violet energy coalesced, shimmering into existence. It wasn't the slow, deliberate growth of a plant, but the rapid, terrifying assembly of a nightmare. Flesh knitted itself together from nothing, drawing particulates from the air, from the very decay around them. Bone extruded, hardening, clicking into place. --- The new Revenant burst forth, fully formed, with a roar that shook the unstable ruins. It was a grotesque marvel. Mammoth, covered in thick, mottled segments of regenerated Grubber carapace. Its legs were like reinforced pillars, its arms thick, ending in blunt, powerful clubs of bone and calcified flesh. Its head was a nightmare: a patchwork of Grubber hide, with two blank, glowing violet eyes that reflected Kaelen’s will. This was ‘Bulwark’. And Bulwark was angry. The Stalkers, surprised by the sudden emergence, hesitated. Their glowing eyes narrowed. But their bloodlust quickly returned. One skittered past Scratch, aiming for Kaelen. Bulwark moved. Not with speed, but with unstoppable momentum. It intercepted the Stalker, a blur of hardened flesh and bone. Its club-like arm swung down with devastating force. The Stalker shrieked, a high-pitched, metallic squeal, as it was pulped into the cracked concrete. Black ichor splattered. Bulwark stood over the remains, its chest heaving, a low growl rumbling in its throat. “Bulwark, engage!” Kaelen commanded. A jolt went through him. His connection to Bulwark was a torrent, not a stream. The sheer mass, the raw power of this new Revenant, was exhilarating. And exhausting. Scratch, despite its injury, barked, renewed by the shift in momentum. It snapped at the heels of the remaining two Stalkers, harrying them, forcing them into Bulwark’s path. The Stalkers, agile but outmatched in raw power, tried to circle. But Bulwark was surprisingly tenacious. Its thick legs pounded the ground, creating fissures. One Stalker tried to claw at its legs, but the carapace held firm. Bulwark simply brought its foot down, crushing it with a wet crunch. Only one remained. It eyed Kaelen, then Bulwark, its violet eyes glowing with a feral cunning. It was faster than the others. It sprang onto a ruined wall, scrambling up, trying to gain an aerial advantage. Its mandibles clicked, a desperate challenge. Kaelen focused on Bulwark. “Jump. Smash.” The massive construct crouched, then exploded upwards. The concrete beneath its feet cracked like an eggshell. It slammed into the wall, a living battering ram. The Stalker tried to dodge, but Bulwark’s hand, now a meaty claw, shot out, pinning it. Another wet crunch. The Stalker’s struggles ceased. It slumped, a broken thing, against the shattered wall. --- The silence that followed was thick, punctuated only by Kaelen’s ragged breathing and the low hum of Bulwark’s restless energy. Scratch limped over, nudging Kaelen’s hand, then stared at the towering Bulwark with what Kaelen swore was awe. “Good job, both of you,” Kaelen murmured, his voice hoarse. He felt drained, almost hollow. Creating something of Bulwark’s scale took a toll. The vital essence had been potent, but the sheer willpower to shape and animate it had left him feeling wrung out. Bulwark stood guard, its massive form obscuring the entrance to the corridor. It was impressive, terrifying. Too terrifying, perhaps. He couldn’t bring something like this into the populated sectors without drawing far too much attention. And scrutiny. He reached out, mentally. "Bulwark, stand down. Recede." The massive construct rumbled. A faint current of resistance flowed back. It wanted to remain. It felt its purpose. Kaelen had imbued it with the Grubber's stubbornness, its primal urge to survive and defend. “No,” Kaelen pressed, a sharper command. “You’ve served your purpose. Recede.” The violet glow in Bulwark’s eyes dimmed. Its form began to waver, to dissolve, slowly at first, then more rapidly, like smoke pulled into an unseen vent. The solidified flesh fragmented, the bone structures collapsed, returning to the Umbral Bloom's raw potential. Only a fine dust remained, settling on the ruins. Scratch looked forlorn. Kaelen knelt, gently stroking the injured Revenant. "We'll fix you up, boy. Promise." He pulled a small, grimy medkit from his pack, patching the torn seams of Scratch’s leg with some salvaged Umbral-treated gauze. The injury was internal, deeper than he could repair with mere thread, but the gauze would help stabilize the construct's essence. His gaze fell on the pulped remains of the Stalkers. Three creatures of the Bloom, now just more gristle and ichor. Their faint vital essences were already dissipating, too weak, too tainted for him to bind effectively. He had bought himself time. But he had also expended a significant amount of his own reserves. He needed to rest, to replenish. And he needed to find a less exposed route back to the Outer Walls of the city, before something else, something worse, came sniffing. He glanced at the empty husk of the Grave Grubber. A clean kill, as far as a Flesh Binder was concerned. Nothing left but the shell. He took a moment, a ritual he’d developed, to express a silent gratitude to the fallen beast for its sacrifice. Then he paused. A glint of metal caught his eye, buried deep within the Grubber’s hollowed-out skull. He frowned. That wasn't part of the creature's anatomy. He reached into the foul cavity, his fingers brushing against something smooth, cold, and strangely regular. Not biological. Not Umbral-grown. It felt ancient. Man-made. He pulled it free. It was a shard. Black, obsidian-smooth, and perfectly geometric. It hummed faintly, a low vibration against his palm. As he held it, the dim light in the corridor seemed to gather around it, almost absorbed by its surface. Then, a sudden, blinding flash. Not from the shard itself, but from somewhere *outside*. A piercing, high-frequency wail tore through the air, shaking the very foundations of the ruined sector. It was the sound of an alarm. A city-wide alert. It was followed by a deeper, guttural roar that echoed from the shattered horizon – a sound Kaelen had heard only once before. The sound of a true Apex Emanation. And it was heading straight for their sector. Kaelen felt a cold dread seep into his bones, colder than any Umbral chill. He stared at the humming shard in his hand. Had he just stumbled upon something far more dangerous than Gloom-Stalkers? Or had he, in his desperate fight for survival, drawn the attention of the ultimate predator?

The Marrow's Song