The unique magic system of Arlam allows its practitioners to manipulate their surroundings in ways both subtle and forceful by activating rhoma: a crystalline substance capable of opening holes in the very fabric of reality, and thus of binding things together. There’s no seal like that of a vacuum. This process is replicable, scalable, and practicably applicable to fields as varied as communication, transportation, engineering, rhetoric, and warfare.
But for all its predictability, no one really knows why it works. And that’s an unsettling thought.