What is like is that it's fun and kind of addicting. However, what annoyed me the most is the 3...2...1...Go! intro where I'm unable to do anything. I end up clicking and wasting my juice at the very start.
Other endless runners like temple runner and flappy all solve this better: You start actually running / moving at the beginning, but have to do nothing until a certain point. This gives you a place to learn the mechanics.
Also, the interaction that long-jumping doesn't cost you wizard juice could be made more clear - maybe light up the bar if wizard juice is being used up, and if you animate it when it's getting low it's also a way to get more "umph" for your game.
These are just my thoughts :) Great game otherwise, it's really fun!