Nature Provides

This is interesting, it says that leystone reacts violently with anything it views as a contaminant. Our foreign-mined flux was enough to cause the small explosion. Local ingredients, however, have learned to coexist with leystone. Up in Highmountain, an herb called foxflower grows that can be turned into a suitable flux. Go and gather some foxflower that we can turn into a usable flux.