The announcement came on a Tuesday, twelve days after the team's formation.

  "Controlled Dungeon Delve," Thresh said, standing before the assembled sophomore combat class in Proving Grounds Arena One. Behind him, a hardlight projection displayed the familiar schematic of the Sunken Subway - the Stable Dungeon beneath the academy. Cross-sections of tunnels, chambers, and connecting passages rendered in blue wireframe, with threat indicators pulsing in amber. "Level One. All teams. Thursday."

  The class stirred. This was the first real dungeon assignment - not a mana-construct simulation, not a hardlight training exercise, but an actual incursion into an actual dungeon with actual monsters that could actually hurt you. The Sunken Subway was low-level and controlled, a teaching environment where the faculty monitored every inch through ward-scrying - but it was *real*, and the difference between simulation and reality was the difference between sparring with a friend and being punched by a stranger.

  Thresh let the murmur run its course, then killed it with silence.

  "Level One of the Sunken Subway is a linear progression environment," he said, manipulating the projection with a gesture from his prosthetic. The blue wireframe zoomed into the first section - a series of tunnels branching from a central platform. "You enter from the Academy Sub-Level access point. The environment is a pre-Unveiling subway tunnel network - dark, partially flooded in sectors, structurally compromised in others. Ambient mana density is low but present. Bioluminescent fungi provide intermittent light. Do not touch the red ones."

  He highlighted specific zones on the map.

  "You will encounter three categories of hostile fauna. First: Tunnel Rats." The projection displayed a creature - oversized, yes, but not dramatically so. The size of a large dog, with bioluminescent eyes and teeth that glowed faintly with absorbed mana. "Mana-mutated rodents. Fast, aggressive in groups, individually fragile. They swarm. If you let them surround you, they will drag you down through accumulated damage. The counter is formation discipline - tight spacing, overlapping fields of fire and reach, controlled retreat to chokepoints when numbers exceed your engagement capacity."

  He swiped. A new creature appeared - something insectoid, multi-legged, with a carapace that looked like rusted metal.

  "Second: Rust Crawlers. Arthropod-class dungeon fauna. Slower than Tunnel Rats but significantly more durable. The carapace is resistant to blunt trauma and low-level magic. Weak points are the joint articulations and the underside. They attack with mandible strikes and a corrosive spit - range approximately four meters - that will eat through Common-tier armor in seconds and skin in less. The counter is precision targeting. Do not trade body blows with a Crawler. You will lose."

  Another swipe. This time, the projection showed something that wasn't alive - a humanoid shape, mechanical, jerking and sparking with corrupted mana.

  "Third, and you will only encounter these if you push deep enough: Broken Attendants. Pre-Unveiling maintenance drones that were caught in the dungeon formation and reanimated by ambient mana. They are not intelligent. They follow corrupted patrol routines. But they are strong - stronger than anything else on Level One - and they do not feel pain, fear, or fatigue. They will pursue until destroyed or until you leave their patrol zone. The counter is knowing their routes and avoiding them, or, if engagement is unavoidable, focusing fire on the mana core in the chest cavity. One clean hit to the core and they collapse. Everything else is a waste of your time."

  Thresh let the projection fade. He surveyed the class with the unhurried gaze of a man who had cleared dungeons that would reduce this one to a footnote.

  "Your objective is simple. Enter. Reach the platform at the end of the tunnel network. Retrieve the marker token that your team's name is inscribed on. Return to the access point. Every team's token is placed at a different location based on your current ranking - higher-ranked teams will find their tokens deeper in, facing harder encounters. Lower-ranked teams will find theirs closer to the entrance."

  A pause. His eyes moved across the room and landed, briefly, on Jace.

  "This is not a race. It is not a competition between teams. It is a survival exercise. You are graded on completion, tactical decision-making, resource management, and injury avoidance. A team that retrieves their token cleanly and returns with zero injuries will outscore a team that retrieves theirs and comes back bloody. The dungeon does not care about your class, your tier, or your ranking. It cares about whether you are smart enough to come home alive."

  He crossed his arms - flesh and construct, organic and arcane, the gesture of a man who was equal parts teacher and warning.

  "Questions."

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  Kael raised a hand. "Are we restricted to Level One?"

  "You are restricted to Level One. If you find a stairwell or passage leading to Level Two, you do not enter it. Level Two's difficulty scales beyond sophomore capability and my patience for filling out casualty paperwork."

  "What about other teams' tokens?" This from Sera, the [Wind Archer] in Kael's party. "If we find one that isn't ours-"

  "You leave it. This is not a sabotage exercise." Thresh's tone carried the particular flatness of someone who'd anticipated the question and the person who'd ask it. "Any team caught interfering with another team's token will fail the exercise and receive a disciplinary review. I don't repeat warnings."

  No more questions. The class was dismissed to prepare.

  In the corridor outside the Proving Grounds, Mara fell into step beside Jace. Her hands were in her pockets, her shoulders up near her ears.

  "Tunnel Rats swarm," she said. "That means blood. Multiple injuries. Probably all at once."

  "Yeah."

  "I'm going to be useless."

  "You're going to be our medic. Before, during, and after. You don't need to heal under fire - you need to be ready when the fire stops."

  "And if someone gets hit by that corrosive spit?"

  "Then you tell us how to treat it and we listen. You know more about wound management than the rest of us combined. You don't have to touch the blood to be our Healer, Mara. You have to know what to do about it."

  She was quiet for a dozen steps. Then, very small: "What if I freeze?"

  "Then I'll yell at you."

  "You keep saying that."

  "Because it keeps being true."

  * * *

  Thursday arrived with the grey, heavy light of an overcast morning and the particular tension that settled over Ironhold whenever the Sunken Subway's access doors were opened.

  The access point was in Sub-Level Three - a reinforced archway set into pre-Unveiling concrete, flanked by ward-pillars that hummed with containment enchantments powerful enough to make Jace's teeth ache when he stood between them. Beyond the arch, a stairway descended into darkness. The air rising from below was cool, damp, and carried the mineral scent of wet stone layered with something sharper - ozone and organic decay, the smell of a place where mana had been slowly reshaping dead infrastructure for centuries.

  Teams assembled in the staging area outside the archway. Twenty-six parties, ranging from four to six members, gearing up with the focused anxiety of people about to enter a place that was trying to kill them at a controlled and academically appropriate pace. Weapons were checked. Armor was adjusted. Potions - basic healing draughts allocated from the academy stores, Common-tier, enough to close a shallow wound or blunt the worst of a corrosive burn - were counted and secured.

  Jace's team had drawn their equipment from the standard student armory. Torrin wore reinforced gauntlets over his already massive fists, the knuckle-plates mana-etched for durability - Common-tier, scuffed, functional. Elara carried no weapon but had loaded her belt pouches with inscription sticks, identification chalk, and a compact mana-lens that she'd modified herself to enhance her [Appraisal] range. Mara had her medical satchel - fully stocked, triple-checked, organized with the compulsive precision of someone who was managing fear by managing inventory. Jace carried a practice short sword - Trash-tier steel that had been resharpened so many times the blade was visibly thinner than its original profile - and a belt knife.

  The gap between their gear and Kael's team was visible from across the room. Durren's tower shield glowed with layered enchantments. Sera's bow had been custom-fitted by an artificer. Kael himself wore light armor that shimmered with heat-resistant weave, and the twin short swords at his hips were Uncommon-tier at minimum - sleek, balanced, with fire-aligned runes etched into the guards that pulsed with dormant energy.

  "Don't look at their gear," Elara said quietly, following Jace's gaze. "Look at their formation."

  Jace looked. Kael's team moved as a unit - practiced, automatic, each member holding their position relative to the others with the drilled precision of people who'd trained together since childhood. Which they probably had.

  "Tight standard formation," Elara continued. "Tank forward, DPS flanking, ranged support trailing. Textbook."

  "Which means?"

  "Which means they'll perform exactly as expected against expected threats. And if something unexpected happens, they'll default to the textbook response." She adjusted her mana-lens, settling it over her left eye like a monocle. "Textbooks are written for average conditions."

  "Is that optimism I'm hearing?"

  "It's analysis. Optimism is a cognitive bias."

  They were called in order of ranking. Top-ranked teams first, entering at five-minute intervals to prevent overcrowding in the tunnel network. Jace's team, ranked twenty-third, waited nearly two hours.

  When their turn came, Thresh was standing at the archway. He looked at each of them in turn - Torrin, solid and coiled. Elara, composed and calculating. Mara, pale but present. Jace, already feeling the low hum of pre-combat adrenaline mixing with the constant background drain of [Wayfaring] like static in his bones.

  "Miller. Your token is at Junction C-7. Approximately four hundred meters in, second tunnel on the right after the flooded section. Expect Tunnel Rats in groups of three to five. Possible Rust Crawler in the C-corridor. No Attendants at your depth."

  "Understood."

  Thresh held his gaze. "Come back in one piece."

  "All four of us."

  "That's what I said."

  They descended.