So I did research on Ryner Lute he has another eye power called Tear Stigma ( his eye color with this stigma is describe as being rainbow with a tear drop shape) that appears in the Light novel, but not the anime. It's like his Alpha Stigma but up to 11. It analyzes magic on a better scale than Alpha Stigma. Not only that it can analyze humans, objects, etc.
Shoots light blasts ( power of blasts is comparable to Glouvil a large two handed magical sword of mass destruction). and erase beings from existence.