That's a rather unique idea! Maybe a bit of polish with more complexity and visual feedback and it would be a fun game to relax to! If I were to suggest something, is making attack that can miss. I'm not sure how the review logic works, but maybe it would be a cool thing to add in the end of the fight.
Also I'm not sure what caused it, but for some reason I couldn't change attacks from 1 to 4. They were permanently "wait".
Good job!