Why is hyperbaton used?
hyperbaton is used (mainly) as a method of emphasis
Hyperbaton is the inversion of the normal syntactical word order in a sentence. For an example:
Compare this to the "normal" syntactic order:
and see how the focus of the sentence changes.
Warning: While hyperbaton can be an effective tool, it is effective because it is jarring and quickly become tiresome if overused.