This kind of reminds me of the jester kit on kitpvp. (The mixing inventory at least)
About the levitation,
It’s 1.9+. There might be ways to make someone levitate like that in 1.8 but I wouldn’t count on it.
I also think it might be kind of overpowered because of the way woolwars is mixing someones inventory (meaning healing, weapon, etc, would give you a guaranteed win a lot of the time.
(what I’m talking about is things like diamond swords being able to 3 hit you unless you have full iron)
(that’s an exaggeration but it’s close)
For now +0/indifferent about the idea. I can’t think of any ideas on how to change it at the moment but I will edit this reply.