Cadmus: "he [Cadmus] must lead barbarian mongrel hordes against our Hellas" (319)
Cadmus is doomed to live a life of violence. He must lead foreign soldiers in battles against other Greeks. We wonder why this particular fate was put on the old man. It doesn't quite seem to have the same ironic twist as the rest of the play. Some scholars think that this ending was added in later years after Euripides's death, which would explain its incongruity.