How would I go about doing Trine's Wizard mechanics with blueprints?

[mrdicat]

So I had the idea of trying to do something like Trine's wizards mechanics, but I have NO idea on how to start.
Anyone who can help me out?Not really do it for me, just kind of explain how I would go about doing it.

Here's the Wizard mechanics I'm talking about: https://www.youtube.com/watch?v=tOKp4oBeQMo&t=94

Thanks!

[OptimisticMonkey]

Physics handle