Soriel's Dance

Name for the aurora visible in the sky on many of the World of Korav , but most especially in Lang-Xue . It is formed by high energy magical particles rising from the Leylines as they interact with the Aether. 
The myth holds the Soriel, the Fey goddess, danced to enchant the demon Ugru in order to escape his lust. She performs her dance eternally, since Ugru's lust is bottomless. The different colours of the aurora are thought to be different styles of dance.