The crystal collection had been a project of six years, which was the right amount of time for a thing that required both patience and sustained effort and was not the kind of project that could be compressed into a shorter period without sacrificing something essential about the process of doing it. Non-elemental crystals were the least exciting variety in the trade networks that ran through the northern confederation — fire crystals, wind crystals, earth crystals, water crystals, all had specific elemental affinities that made them sought after by the majority of Worldbearers whose Core Species carried matching alignment, and their supply networks were established and their prices were predictable and the guild agents who collected and distributed them were experienced and well-funded. Non-elemental crystals served the smaller population of bearers whose species carried no elemental alignment, which made them harder to find, less commonly traded, and priced with the particular capriciousness of things whose supply is inconsistent.

  Luc had sourced his through channels that required a combination of patience, relationship-building, and the willingness to do work that other people found tedious in exchange for fair compensation. The guild agents who came through Frostpeak every season knew him by his eleventh year as the quiet dark-haired boy who consistently had clear project specifications and never tried to negotiate dishonestly and always delivered what he said he would deliver, which were not universal qualities among their northern contacts and were valued accordingly. Two winters of assisting with collection work — cataloguing, sorting, basic quality assessment — had produced a working relationship with the senior agent that resulted in access to non-standard inventory. A year of contributing theoretical analysis of energy circulation patterns to Elder Maren's instructional records had produced, as an unexpected side effect, the goodwill of three senior elders who found ways over time to ensure that relevant crystals encountered on expedition became available to him at fair prices.

  He had ninety-nine crystals by the morning after his Snow Burial Trial.

  Crystal ninety-seven had come from a trader passing through six months prior, who had produced a small cache of non-elemental stones from a northern dig site and had been more interested in clearing his load than maximizing his margin. Crystal ninety-eight had appeared on his training room shelf the morning after the Trial, placed without announcement or explanation in Elder Borath's distinctive manner — a flat stone placed beside the crystal, on which was written in Borath's economical hand: *I have had these seven years. They have been waiting for the correct use.* Luc had held the crystal for a long time and then written Borath a formal note of thanks, because Borath was the kind of person who received formal notes correctly — as the acknowledgment of something real, not as social obligation. Borath had sent back a single line on a scrap of the same material: *Don't embarrass the tribe.*

  Luc had read this and understood it as the highest possible praise that Borath was constitutionally capable of delivering.

  The hundredth crystal came from Lira on a Thursday evening, three weeks before the Walk ceremony.

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  She was eight years old, and she placed it on the dinner table beside his plate with the matter-of-fact directness that was entirely her own, without preamble, in the same way she did everything that she had decided to do. It was a small stone, clear as winter ice, giving off no particular light — non-elemental, which she had determined through the basic assessment technique she had apparently been learning from somewhere, or possibly from watching him assess crystals enough times that she had absorbed the method.

  "I saved," she said. "For a year. It's the right kind. I checked."

  He looked at the crystal. He looked at her. She was watching him with the clear blue eyes that she had brought to everything since she was old enough to have an expression, and there was in them the particular combination of having-done-a-thing and not-requiring-acknowledgment-of-having-done-it that was very specifically Lira — she had done this because she had decided to do it, and whether he understood what it had cost was less important to her than whether he received it correctly.

  He received it correctly.

  "Thank you," he said, and put all the weight he had behind it, and she heard it and nodded with a satisfaction that was brief and genuine and then set aside, because Lira did not dwell on things any longer than they required dwelling on.

  He waited until the night before the ceremony to use them.

  He sat in the center chamber of the Eternal Hive and spent an hour laying out the placement pattern he had been designing for three years — a radial grid, each crystal positioned at the intersection of a primary circulation pathway and a secondary support structure, the geometry calibrated to distribute the advancement energy across the world's entire grid simultaneously rather than concentrating it at a single intake point and relying on the infrastructure to spread it from there. The difference, he had calculated, would be measurable — not just in the advancement process but in the stability characteristics of the post-advancement world, the distribution method producing a more even foundation than the concentration method and compounding better with the Law of Structure's existing reinforcement patterns.

  He placed ninety-nine crystals in their positions. Then he held the hundredth — Lira's — for a moment in the dreaming-space, and placed it last, at the center of the radial pattern, in the center chamber that she had never seen and did not know existed but had contributed to in her own way, by being the kind of person who followed him to training at age two and kept a question journal and saved for a year without telling anyone.

  The world changed.

  It changed the way that good structural modifications change things — not with fanfare, not with rupture, but with the deep, settling quality of something becoming more what it was always going to be. The energy moved through all ninety-nine crystals simultaneously, distributed through the grid he had laid out, absorbed by the infrastructure in the even, thorough way that he had designed it to be absorbed, and the Hive drew it into itself and the stability metrics jumped — not by a small increment but by a step, the way water rises to a new level when a channel is opened rather than trickling up gradually — and the ants paused for a collective moment that was not hesitation but recognition, and then resumed with the particular quality of things working at the next order of precision.

  INNER WORLD STATUS

  World: The Eternal Hive

  Realm: 2 — Growing Realm

  Core Species: Builder Ant (Non-Elemental)

  Population: 11,847

  Specialty: Construction / Infrastructure

  World Stability: 91%

  Advancement Method: ???

  [Something has changed in the world. Look carefully. The method is present — you must find it.]

  He read the question marks for a long time. He read the hint. He looked around the center chamber and into the tunnels extending from it in every direction, and he began, slowly, to understand that the next method was not going to be given but discovered, and that this was not a failure of the system but a feature of it — the world had grown complex enough that its own structure contained the answer, and the finding of the answer was itself part of the becoming.

  He smiled in the dreaming-space, alone in the center chamber with the ants building around him and the advancement fresh in the world's walls.

  The mystery suited him. He had always been better at solving things than following directions.