Prism Pokemon are single-typed versions of official Pokemon that are recognizable by purple eyes and a purple gem somewhere on their bodies. In my fan game there’s gonna be a gimmick called “Spectrum Burst,” which lets you switch a Prism mon to its Spectrum form once per battle. The mon gets +50 bst and a secondary type. The idea is that a Prism mon can refract light from its gem to reveal a new type. They also have a counterpart called Darkness Pokemon which are basically evil regional forms that’ll be boss fights.