With the third chapter of The Storm Winds of Glazglubin completed, spellblight has become a more and more prevalent topic. But what is it?
When people use more magic than their souls can handle, their gates begin to accrue permanent damage, causing magic from the Great Clockwork to "leak" in. It turns their hair as white as snow and their eyes cobalt blue, and at some point, they become unable to perform magic altogether. Nearly everywhere in the world of Aqualon, such blighters are seen as lesser people, the stigma of having a "damaged soul" clinging to them...
If you want to learn more, here is an intricate lore article with picture and further reading available on the subject-matter: https://gates-of-aqualon.com/a/Spellblight