Chroma's Spectral Scream is  undoubtedly the ability most unused throughout his abilities so I had an Idea of a different ability. Chroma with an ability to change or add element. Seeing as though he is deemed "The master of elements" in the codex. I don't see why he doesn't use elements such as Corrosive radiation etc.  So give him the ability wheel like Ivara, and Vauban has. And in those slots put in Heat, Electricity, Toxin, and Cold. These four will effect his Elemental Ward and h