Yes im using the frostbite spell, Tell me, do i shoot it at the lens that's pointing the light ti the celing or the lense bouncing the light off the ohter lenses?
Aim at the lenses in the arch, I don't think it needs to be precise. If the beams don't move, shoot the opposite spell (ie flames). It moves in 3 or 4 steps in either direction, iirc, so it will stop when it reaches max in either direction.
This is a harder puzzle than snake/fish/bird, thank gawd. I was happy to be challenged for once.