Celyn looks like a lean, weathered human in his late seventies, though the impression shifts when he moves: his posture is too exact, as if an invisible plumb line follows him. His skin has the dry, fine-grained texture of old parchment, and his close-cropped white hair is combed with almost ceremonial care. He breathes in measured sets of four, a habit so conspicuous that people notice it before his robes. When startled, the rhythm breaks into a sharp double intake, and he visibly has to count himself back to calm. He walks without hurry, placing each foot as though testing a floor that might not obey ordinary laws. The unexpected detail: his cuffs are embroidered with tiny, painstakingly neat pictures of local birds, a private collection of sketches he adds wherever he travels.

Celyn is generous with instruction but guarded with trust. In a crisis he is brisk, decisive, and startlingly willing to risk himself; afterward he can become fussy about procedure and resent anyone who calls the outcome lucky. He enjoys small domestic comforts yet distrusts grand gestures, and he can be tender toward frightened beginners while showing little patience for confident experts who refuse to check their work.

Celyn was born to a family of practical stonemasons and learned letters by tracing measurements in quarry dust. In his youth, he watched a village healer lose patients because no one could agree on what magic was doing. He began recording spells as repeatable principles, not prayers or inherited mysteries. His first experiments made a well run backward for three days and accidentally taught him that magic obeyed rules even when its practitioners did not. The formative catastrophe came when he tried to prevent a fever from spreading through his home valley by binding every breath to one shared ward. The ward worked, but it trapped the last breath of his younger sister, Efa, inside its pattern. He spent years undoing the spell and never managed to bring her back. Since then, Celyn has insisted that knowledge must be teachable and power must have limits. He founded a small school that later dissolved into rival traditions, and he still sends anonymous corrections to their students. His current problem is that a fragment of the original ward has begun appearing in unrelated enchantments, suggesting someone is rebuilding it. He has no reliable allies among the surviving schools, but trusts a retired mapmaker named Dorian, who once helped him locate the ward's buried anchor.