The chamber answered experiment before it answered theory. When [b]Sa'Saori[/b] brought the enchanted tip of her blade against the floating crystal, a clear note rang out through the room, high and pure as struck glass. The prism did not stop, yet its rotation shivered for the span of a breath, and the beams spilling from it jumped across the mirrors in a new pattern before settling again. Touching the mirrored panels with the same enchanted steel proved more revealing. Most remained cool and firm, but one gave a faint ripple beneath the blade as though its surface were only pretending to be solid. Another swallowed the reflected glimmer for an instant instead of casting it onward.  

As [b]Ichabod[/b] moved the perimeter with lantern in hand, the structure of the trial began to show itself. This was no random scattering of light. There was intent in it. Some mirrors reflected true, some bent the angles unnaturally, and at least one seemed meant to interrupt or consume a beam rather than continue it. The sealed archway opposite them remained the clearest destination, especially the interlocking crystal plates set above its frame, where faint lines could now be seen resting dormant like an incomplete sigil. His reading of the chamber aligned with what the room itself was quietly suggesting: this was a test of routing, discernment, and false appearances. 

[b]Alicia[/b]'s gravity reached for the central prism next. Under the pressure of her spell and the warded resistance woven into the chamber, the crystal did not yield fully, but its turning did shift. For a few moments its horizontal drift tightened into a cleaner axis, and one narrow beam sharpened enough to strike the wall beside the door. There, a single silver rune lit violet, then faded when the prism's motion slipped back out of alignment. High above, unnoticed by most, the shadows of the observation gallery remained still. 

Near the wall, [b]Adelhein[/b] watched in silence, arms crossed, letting the newcomers find the shape of the first answer for themselves.