Theo was walking through Hourglass Meadow and searching for the Shepherd to climb the great runas and her their wish granted, holding a small prism. The prism seemed to be talking to them, and directing them on the right direction, if that made any sense. They were speaking back to the small triangular object. Light bounced off of the prism, retracting all the separate wavelengths of visible light into a vibrant rainbow across the meadow.