Press and hold to channel a spell, release to cast it: an orb of arcane energy blooms above a dark floor — a violet core threaded with flowing cyan veins and a pulsing lattice under a fresnel rim — ringed by turning rays and three raymarched rune rings that orbit and precess, while a magic circle of rings, rune marks and a hexagram unfolds and turns beneath it. Moments later the orb goes critical — swelling, throbbing white-hot, its rings spinning up — and detonates in a chromatic shock shell, flying shards, flung rings and a bursting circle, with a flash, a refracting shock front and camera shake.