Cuain's murder and revenge
Years later, Khunag returned alongside Tom and the others to finally take his revenge. Despite Cairnain transforming to Kamulos, he was defeated. Thanks to worries about the consequences of the other Kengets discovering this, the high priests let Tom and his party go.
His death showed that Kamulos is not as invulnerable as the Kenget thought. However, the death of Cairnain might have been caused only by his own weakness and cowardice.