Ask Clayton about this last trial when you get there. You must master the rain dance.
The dance consists of nine steps that are inspired by the seven remarkable statues, mighty velocipede and the beast of the air.
One of the statues is missing, though.
This is the low-spoiler guide for "The trial of the rains" puzzle in Mutropolis. Unlike in normal walkthrough, you get gradual hints on how to solve the puzzle. Click the big button below to see your first hint. If the hint contains a spoiler, you will be warned about it before clicking.