The school waited out two days on rumors while Vasa built the weapon, and the weapon was mostly arithmetic. Lab chemicals, coolant drained from three dead refrigeration units, her own ice as binder, all mixed to a recipe she refused to simplify.
"The colony cycles," she said, walking the party through it on the water room floor, "spore to veil to fur to vein, every stage feeding the next. Cold alone only slows one stage."
"This stops the cycle itself," she said, tapping the recipe, "if it goes into the veins while they're drinking."
"And it needs to be me at the mixing point," she said, "since the timing is mine. Nobody else reads the freeze."
"Then the plan is your plan," Nox said, "and the rest of us are delivery."
She blinked once at that, because command handed over cleanly was not a thing the school had taught either of them. The party spent the evening rehearsing her timings until the drums moved like drill.
Kendra learned the pour weights by lifting each drum with her eyes closed. Yeda memorized the junction geometry from the map until she could walk it with her eyes shut. Nobody in the room called it trust, and everybody in the room used it as trust.
The siege went in at dawn on three routes, every filter checked twice at the border. Ava had come in person with four of her crew, terms inked, her fire priced by the vein.
Her flames took the outer veins right on schedule, loud entirely on purpose. Custodians poured east toward the noise while the real weapon walked quietly west.
Kendra carried the coolant drums the way she carried everything that needed moving. Yeda ran the flank with her ruler and a satchel of Vasa's charge flasks. The mixing point sat at the grand junction where every vein in the wing converged before the heart.
"Known risks stand as stated," Nox said at the junction mouth, "so hold the geometry, feed her the drums, and nothing touches the auditor while she works."
The colony understood the shape of the threat the moment the first drum opened. Custodians came off the walls in waves, veils dropped like weighted nets, and the junction became a drowning market of dust plus teeth.
Stone held the north mouth of the junction against the incoming waves. The ruler held the south with an economy that made veterans of onlookers. His knife walked the line between, spending itself wherever the geometry thinned.
Vasa worked at the center of it the way Diana had worked her corridor, spending in exact denominations. Chemical met coolant, coolant met ice, and the mixture went into the swollen veins as a slow silver flood that did not melt.
A custodian wave broke through the south mouth once, and once only. The ruler taught it the price of the gap in four strokes, and the wave decided the east fires were more approachable after all.
The freeze moved through the colony's plumbing like a verdict finding its address. Veins went rigid, pale, down every corridor at once, veils fell out of the air mid-drift, and the fur's slow pulse stuttered against a cold that arrived from inside.
"Cycle's stopped," she said, frost-burned to the elbows, swaying, still upright, "and the root will try to restart it. Go kill the restart."
It was the first order she had ever given him, and he took it at a run. The receipt for that would get counted later, in a column neither of them had named yet.
He left her the junction and took the last corridor at a run, Kendra at his shoulder, the ruler behind. The Tyrant's chamber had gone silver-veined and dying, feed stock hanging slack, the bulb blazing as it pumped against the freeze.
The root fought him physically, which was the only currency it had left. Feeler ropes came off the weave in whips, and the last custodians dragged themselves off the walls with the cycle's final calories.
Kendra broke the whip ropes at their anchors, patient as quarry work itself. Yeda cut the screen of custodians into manageable arithmetic, and his knife went into the root bulb's casing along the seam Appraise had priced two visits ago.
Feeler ropes found his ankle twice, and twice the fall cost him skin instead of position. Regeneration hummed at the scrapes while the real work stayed on schedule.
The bulb split on the third strike, and the wing's whole breath went out at once. Fur greyed down every corridor like a season changing on fast forward, and the silver in the veins set solid.
[ Colony destroyed. Spore cycle terminated. ]
[ EXP +2,800. (15,300 total.) ]
[ Level 17 reached. Level 18 reached. ]
[ 10 assignable points available. ]
He fed three to Strength, two to Endurance, three to Perception, one each to Agility and the Stamina line. The levels landed on a body that had earned them twice over, and for once nothing on him was actively bleeding.
Eighteen levels since a classroom door had broken, eleven days by any honest count. Somewhere under the arithmetic, the boy who had entered that classroom armed was becoming difficult to locate, and he spent no time searching.
The Tyrant itself was nowhere in the split wreck of the bulb. What remained sat in the root's cradle, fist-sized, pulsing, a living core that had pulled its owner inside itself when the plumbing died.
[ Spore Tyrant: core state. Entity dormant, alive. Authority intact: mana channel rewrite. ]
He reached for it with a gloved hand, and the core reached back. Pressure arrived against his mind like a hand feeling along a wall for a door, patient, professional, wrong.
[ Warning: mana channel intrusion attempt. ]
[ Scan result: no open channels found. ]
[ Sealed channels detected: 7. Access: denied. ]
The pressure scrabbled against the seven sealed doors it had found, tried each in turn, and slid off the lot of them. Whatever the Tyrant's authority could rewrite, it needed plumbing that opened, and his had been born shut.
Seven sealed channels, said the line, sitting in his sight while the core went quiet in his palm. The whole shape of his own body changed slightly around the number.
He had never actually been a boy without any mana at all. He had mana behind seven locked doors, and the world had simply never issued him keys.
Kendra came off the ropes and read the core in his palm with open suspicion. Whatever her instincts said about things that reached back, her stone stayed up the whole walk out.
"State it," Vasa said from the junction, reading his stopped face across thirty feet of dead colony.
"Later," he said, wrapping the living core in her silver-frost cloth, "when I've decided what it costs. Right now we inventory a dead wing."
The clamp went around the wrapped core, the core went into the pack's bottom, and the pack stayed on his back, because some cargo did not delegate.
Vasa logged the clamp's seal twice in her inventory hand, dating it, initialing it. The vault became a fact of record before it became a habit. They walked the greyed corridors while Ava's team burned the frozen veins to powder behind them.
[ Science wing: colony authority terminated. Territory: unclaimed. ]
The signed contracts began paying out by evening, cores from the gym, stock from the cafeteria. A fortress runner arrived early with the corridor rights already inked, which said Owen had drafted them before the outcome existed.
The claim on the dead wing itself could wait for the finished count. He was halfway through pricing the storeroom when the core spoke, not in sound, in script, patient as its dead colony had been.
[ Offer: mana awakening. ]
[ The seven sealed channels can be opened. The rewrite is permanent. ]
[ Cost: permanent contamination. All seven channels will carry the colony's pattern, forever. ]
He read it three times while the party moved around him, counting crates. Seven doors, one key, and the key was a parasite that wanted to live in the locks. The offer did not expire, which made it worse, because patient sellers believed in their product.
"State the known risks," Vasa said, beside him now, reading nothing on his face and knowing anyway.
"The wing wants to sell me magic," he said, wrapping the core a second layer deep, "and the price is wearing it forever. It goes in the vault until the price improves."
"Prices like that don't improve," she said, watching the pack settle on his shoulders.
"Everything improves," he said, shouldering the pack, "once you own the only market it can be sold in. The wing is dead, we hold its heart, and the heart can wait on my terms now."
Behind them the greyed corridors stood quiet for the first time since the Merge. Two wings now answered to his contracts, and seven sealed doors rode his back asking one patient question.
Somewhere above, the school had begun pricing what his answer might someday cost it.