Chapter 4: The UnderMarket

The apprentice mage's fork dropped a full note when Kael moved past her. A tuning fork that registered the shard's magic would spike at any magical presence, and he was walking through her trap with the thing burning hot against his sternum. The tracking was supposed to be foolproof. She hadn't counted on him knowing the tower had a back exit, a hole in the stone where water had eroded the foundation and widened into a gap just wide enough for a man to squeeze through on his belly.

She shouted after him, some command in the old magical language that made the air feel thick. The shard pulsed once in response, an almost playful warmth, and Kael was already through the gap and into the drainage channel before the echo of her voice reached the other side. He crawled for about thirty meters through water that covered the tunnel floor by six inches, then found a vertical shaft he could climb with enough effort to get his boots above the worst of the drainage. At the top, a metal grate held him back. He pushed it aside with his shoulder, climbed out, and kept moving south into the undercity tunnels that led toward the flooded edge districts.

The route took him through three blocked sections of collapsed tunnel, where sections of the upper tunnels had crumbled down through the stone into the undercity below. He'd mapped these before. The gaps were irregular, jagged holes where the stone had cracked and fallen, and they were impassable by normal means. Phase would work. The shard's power could push him through solid matter for a few seconds at a time, enough to walk through a wall or pass through a collapsed ceiling if he timed it right.

The first gap was manageable. A pile of rubble blocked the tunnel, boulders the size of barrels wedged against each other and the tunnel walls, but the upper section had settled at an angle that left a narrow opening near the ceiling where the stone hadn't fully shifted. Kael placed his hands against the wall, activated Phase, and the shard sent that same warm pull through his network. The wall rippled under his palms, and he stepped through it like walking through smoke, emerging on the other side with his elbow scraping rock. The memory cost was minimal. A face from the dockyards, someone he barely knew, dissolved into nothingness. A dockhand's name. Kael would have remembered it ten minutes ago.

The second gap was worse. The rubble had shifted entirely, sealing off most of the tunnel with a wall of stone that looked solid enough to stop a ship. He'd need to phase directly through the rock rather than around an opening. The shard's warmth flared as he pressed against the stone. Phase pushed harder this time, and the resistance was like walking through something denser than air but still fluid enough to yield. Halfway through, the wall gave way completely and Kael stumbled forward onto loose gravel on the far side.

The cost hit immediately. His knees went weak. He sat down hard on the gravel and put both hands on his head. A name came apart. Lira, a friend from the years before the docks, the ones he spent drinking cheap ale and gambling away coin in backrooms that smelled of stale sweat and pipe smoke. Lira who had taught him how to cheat at dice, who had laughed when Kael lost and laughed harder when Kael won. All of it gone. The memory was just a blank space now, like pulling pages out of a book without leaving the cover. He could remember that Lira existed, or maybe he couldn't even remember that. He couldn't tell. The hollow had the particular quality of something that had been removed cleanly, and he'd have to spend the next hour trying to figure out what details of his own life had just vanished.

The third gap was the worst. A full collapse where an entire section of tunnel had caved inward, creating a chamber filled with rock and debris. No opening to work around. Phase through the full width. Kael braced himself, pressed his forehead against the stone, and activated the shard's power. The warmth surged through his network, the stone softened, and he stepped into the wall with both feet.

This time the wall was thick, and Phase lasted longer. The shard pushed harder, and harder, and the resistance built like a wall climbing toward his chest. For three full seconds he moved through stone that should have been solid, and then the third cost took hold.

His sister's birthday. Gone. The name, the date, the entire memory of when she had been born. Gone. And then the name of another friend from his youth, someone he had known before the dockyards entirely. The specific details of conversations, the shared moments, and the places they had hung out together, all of it pulled away like pages from a book he had read and forgotten. Kael stood in the rubble chamber on the far side of the wall, breathing hard, and couldn't place two faces from his own childhood. The shard sat in his chest, steady and satisfied, like something that had just been fed.

He needed to get to the UnderMarket. The flooded edge districts connected to the main drainage system that ran beneath the UnderMarket, the vast cavernous trading floor that existed entirely below the upper city's magical oversight. A place where information, stolen goods, and everything else the upper city banned could be bought with currency that had no official value. Kael found the drainage hatch behind a closed fish vendor's stall, a rusted iron grate that gave way when he pulled it aside. He dropped through the opening into a narrow passage that opened up into a cavern much larger than anything he'd seen in the tunnels above.

The UnderMarket was a low-ceilinged cavern that stretched further than the eye could see, with makeshift stalls built from salvaged timber and sheet metal lining every available surface. The air was thick with smoke and cooking oil and the metallic tang of something alchemical being prepared in a back corner. Stalls sold everything from stolen upper-city artifacts to information from brokers who operated outside any mage's jurisdiction. People moved through the narrow pathways between stalls in groups and alone, some wearing the plain clothes of the lower caste, others in the rough-spun garb of smugglers. The cavern's ceiling was dotted with bioluminescent fungus clusters that provided just enough light to see, though the deeper sections of the market required lamps or the glow of purchased magical residue.

Kael navigated the crowd. Most of the merchants were too busy haggling or watching their stalls to care about a dockhand in a soaked coat. He kept his hood up and his hands in his pockets, the shard's faint warmth pulsing against his sternum. A few people glanced at him. Some of them could probably sense the artifact through residual magic, though the UnderMarket was full of magical residue from a hundred different sources, enough to mask his signature if he stayed still long enough.

He needed Vess. Orla's memory had given him a location near the flooded edge, and the flooded edge connected to the deepest end of the UnderMarket through a network of service tunnels that only market workers used. Kael found the tunnel entrance near a stall selling forged upper-city identification documents, squeezed past a woman haggling over a stolen communication token, and pushed through a heavy curtain into a corridor lined with closed doors. The corridor opened into a converted cistern chamber at the market's deepest end, and behind the door, a small figure sat surrounded by stacked ledgers and communication tokens.

Vess was smaller than the memory had suggested. She looked like someone who had spent most of her adult life in windowless rooms, pale skin and dark circles under her eyes, hair pulled back in a simple knot that had loosened hours ago. The ledgers around her were covered in notation in a system Kael didn't recognize, columns and symbols that looked like a mix of accounting records and something else entirely. She looked up when Kael entered, and her expression shifted from guarded to something harder.

"I didn't invite you," she said.

"I have information you want."

"Everyone has information you want. That's what people keep telling me before they walk through my door." Vess folded her hands on top of the nearest ledger. "What do you have?"

Kael pulled two things from his coat. A folded note with a dock-wage exchange order written on it, signed with a number that would pull two months' wages from his account when presented at any dockmaster's office. And a folded piece of metal, folded from the ashes of the gaunt mage, a small piece of the upper-city pass he'd stolen before the man turned to dust.

"Two months of dock wages and a forged upper-city pass," Kael said. "I need a trace on the mages tracking me."

Vess examined the pass first, turning it over between her fingers. She held it under the cistern's ambient light, checking the stamp, then the metal's grain. "This is a genuine forgery. Someone in the upper city made this well. I'd need to know which division before I could verify the stamp pattern." She set the pass aside. "What kind of trace?"

"Names. Locations. How many people, how far behind me, what techniques they're using. Everything you can get for two months of dock wages."

Vess considered this for a long moment. Then she reached under the table and pulled out a small vial of something dark. "The trace you're asking for costs more than two dock months. A full hunter profile requires contacts in three different divisions. The summoning division won't share their active trackers without authorization."

"So give me what you can get for the price."

She uncorked the vial and pressed it against her thumb. The dark substance inside glowed faintly, a memory being drawn out. She pressed her thumb against Kael's wrist, and the contact was cold. A new memory entered his mind, one that wasn't his, pulled from Vess's own collection of purchased information.

The memory was fragmented, partial. A room where three figures sat around a table covered in magical diagrams. One of them spoke about a "residue score," a measurement of magical exposure taken from people who had been near dangerous objects. Another voice said the score was "above acceptable limits" and someone in the room needed to be "reassigned or neutralized." The third voice, lower and more measured, mentioned a name. Sylas. An outcast mage, dismissed from the summoning division years ago for research that violated upper-city protocol. Sylas maintained a workshop near the UnderMarket's edge where he bought residue samples from anyone who'd been exposed to dangerous magical objects.

The memory dissolved. Vess was watching him.

"I don't have your hunters' names," she said. "But I have this. A man named Sylas. He knows about the summoning division's methods better than anyone currently active in the upper city, and he's been buying residue samples from people who've been near dangerous artifacts for years. If anyone in this city knows what you're carrying, it's him."

Kael stood. "Where?"

"Third corridor past the deepest stalls, behind the water pump station. His door is marked with a circle and a vertical line, the same symbol as the smuggling routes you came through. Don't knock. He'll hear you coming."

The workshop was exactly as Vess had described. A cluttered room filled with glass collection vials arranged in rows along the walls, old summoning diagrams pinned to the walls in what looked like a chronological sequence, and a workbench covered in residue-scoring instruments that looked like they'd been built from scavenged parts. The air smelled like ozone and old chemical residue, a sharp tang that made the back of Kael's throat burn.

The man at the workbench was thin, almost gaunt, with ritual burns scarred into his hands and forearms in patterns that Kael recognized from the gaunt mage's arms. He looked up when Kael entered, and his eyes were the color of old brass, pale and focused in a way that suggested he didn't spend much time on small talk.

"The shard," Sylas said. He didn't ask about it. He stated it. "Where did you get it?"

"Accident. A summoning ritual in the upper city went wrong."

"Which division?"

"Summoning division. Five practitioners. One of them is dead now."

Sylas pulled a chair out from the workbench and sat down. He studied Kael with an intensity that felt physical, like someone who had been waiting a long time for this moment. "Three questions before I help you. First: when did it bind to you?"

"Three days ago."

"Second: how many times have you used its power?"

"Twice. Maybe three. I lost track of the exact count after the second use."

Sylas's expression didn't change. He picked up a small instrument from the workbench, a handheld device with a crystal lens and a needle-tipped probe, and held it near Kael's chest without touching him. The crystal lens flared blue, and Sylas checked the reading, wrote something on a piece of scrap paper, and set the instrument down. "The residue score on your body is higher than I've ever measured. You've used the shard more than you're telling me."

Kael didn't argue. The man had instruments that could read exactly how much magic had been transferred into his body, and pretending otherwise would be pointless. "I've used it more than I can count. Every time I phase through something, it costs me something else. Memories. Names. I don't know how much I have left."

Sylas set the instrument aside and folded his hands on the workbench. The ritual burns on his fingers were old, healed over decades, scar tissue that had grown into permanent grooves in his skin. "Third question. Do you understand what the artifact inside you actually is?"

"I know it's a fragment of something called the World-Eater."

Sylas nodded. "Most people in the upper city think the World-Eater was a myth. A story from before the magical establishment was founded. But it wasn't a myth. It was a primordial entity, older than any of us, older than the city itself. Someone destroyed it and sealed its fragments across the world, scattering them in places no mage could find them. One fragment ended up in a summoning circle. Someone with enough power to arrange a full ritual channeled it deliberately into a chosen vessel. The ritual wasn't a failed experiment. It was a binding ceremony designed to put the World-Eater's fragment into a body, and you were the body it chose."

The workshop went quiet. The ozone smell was still sharp, but Kael couldn't process it alongside the weight of what Sylas had just said. Every mage in the city thought the ritual had failed. They were wrong. Someone had orchestrated it. Someone had arranged a full summoning ceremony, the kind that required five practitioners and enough magical knowledge to bind an artifact to a specific target, and they had chosen Kael.

"Who?" Kael said.

"I don't know who arranged it. The summoning division keeps its records locked. What I do know is that the fragment inside you is still alive. It's still trying to complete whatever the original entity was meant to do. The progression you're experiencing, the powers you're gaining, the memories you're losing. It's mirroring what the fragment did before it was destroyed. The shard wants to grow. It will keep growing until it consumes everything you are, and then it will continue beyond what a human body can hold."

Kael pressed his back against the wall. The stone was cold against his shoulder blades. "How do I stop it?"

"You can't. The fragment is already bound to your soul. The only thing you can do is control how much of it you let out. Every time you use the shard's power, it feeds. The more it feeds, the more it grows. The more it grows, the less of you there is left." Sylas reached under the workbench and pulled out a small notebook, flipping through pages filled with dense notation. "I've spent years studying primordial fragments. This is the closest I've ever gotten to actual research. If you let me study the shard's residue on your body, I can give you a better understanding of how the progression works. When it accelerates, what triggers it, and what happens when it reaches its final stage."

Kael looked at the instruments on the workbench, the vials, the scoring devices, the diagrams pinned to the walls. This man had built a laboratory in a damp workshop below an illegal market, working with scavenged parts and knowledge that the upper city had tried to destroy by exiling him. The upper city's summoning division had made him an outcast, and he'd spent years studying exactly what Kael was carrying.

"All right," Kael said. "Do what you need to do."

Sylas smiled. It wasn't a friendly smile. It was the smile of a man who had been waiting for this moment for a long time, and now it had arrived.

They left the workshop together and crossed through the flooded edge districts toward Kael's place in the undercity. The water was deeper here, ankle to knee-deep in places, and the tunnels narrowed until the ceiling brushed Kael's shoulders. Sylas walked ahead of him, reading the walls as if he could feel the magical residue in the stone itself.

"Binding rituals require a willing vessel," Sylas said. "That's the fundamental principle. The fragment needs to be accepted into the body through consent, even if the consent is unconscious or coerced. The five practitioners in the summoning division didn't know who the target would be, which means they used a generic binding sequence. Generic sequences require the target to be present in the magical field when the ritual activates. You were in the restricted area. You were in the right place at the right time." Sylas paused. "Someone arranged for you to be there."

"How?"

"The summoning division doesn't usually operate in the undercity. The fact that five mages were in a restricted area beneath the lower docks means someone with enough authority to clear access to that area sent them there. That someone also arranged for a dockhand to be working the night shift, which means they had a way to get you into that specific position at a specific time." Sylas kept walking. "Your involvement wasn't an accident. You were a piece on a board."

Kael said nothing. The water slapped against his boots with each step. The shard pulsed warm and steady against his chest, and he could feel it responding to the magical traces in the air, the residual signatures of every mage who had walked this tunnel before him.

Halfway through the flooded edge, Sylas stopped. He pulled a small tuning fork from his coat pocket, different from the apprentice's tracking equipment, smaller and modified with additional crystals embedded into the handle. He struck it against his knee and held it near Kael's chest.

The fork vibrated at a frequency that made Kael's teeth ache. Five distinct tones layered on top of each other, each one representing a separate magical signature moving through the undercity tunnels. All of them using summoning-division techniques. All of them moving toward Kael's location at speed.

"There are six others in the city hunting the same artifact," Sylas said. "All of them from different divisions. Some are working alone. Some in pairs. They're all converging on your position. Within the next few hours, six hunters will be in this district looking for you."

Kael stopped walking. The flooded edge stretched ahead of him, two submerged streets crossing at an intersection where the water was chest-deep and the tunnel walls had crumbled enough to let rainwater trickle down from above. Sylas stood a few feet away, holding the fork, waiting.

The shard burned against his chest. The five signatures pulsed closer with each passing minute, drawn to the artifact's magic like moths to flame. Kael stood frozen at the intersection, the water lapping at his waist, Sylas waiting for his answer, and the fork vibrating in the man's hand with each of the six signatures closing in.