"[w]hen i heard the ringmaster's whip splinter the air" is an example of which figurative device?

It would be an example of imagery, which is the figurative device that focuses on vivid details. Hope this helps! :)

I think the answer is No council held, no monarch fills the throne; But high on hills, or airy cliffs, they dwell, Or deep in caves whose entrance leads to hell. I say this because they arnt any leaders in the aeria and dont fear zues and are barberake cavemen who eat people like candy this is what it says later on in the story.