"They're many names given to the things of this vast consciousness that we don't understand, are afraid of, or otherwise just don't want to be associated with. These creatures, though familiar in appearance to many common races, have no name for themselves, but have been appropriately named "Concordare Iram", Translated: Harmonized Rage."
A certain patch of forest is well known for causing anyone who ventures into it to suddenly go blind. Once they leave the area their vision returns. Rumors of treasure hidden within.