The material component of this spell acts as both catalyst and conduit. You hold open your palm, reciting the incantation. The diamond's structural make-up acts as a scaffold, forming into a rigid polyhedron and gently hovering above your hand. That rigidness becomes smooth as the spell takes shape, compressing into a sphere of glass that rotates. All that's left is to imbue the orb with an element of your choosing and unleash it upon those who would dare test your arcane ability.
