Saa
From A Wheel of Time Wiki
Saa : (definition unknown)Saa, a word drawn from the Old Tongue, is a visible indication of a person who has channeled too much of the True Power, the dark power drawn directly from the Dark One himself. It manifests as black flecks traveling across the eyes, increasing in number as the person channels more and more of the True Source. The only known example of an individual displaying the saa is Moridin.
