Super innovative gameplay, choosing the attack cards and evading them afterwards. It seems like a type of game that could be explored with some random "roll of the dice" shenanigans. I like that you have to spend your mana and can't just wait around, so you really have to be clever to pick your poison. Top marks for innovation IMO.
Good choice of music, and I think SFX would really shine in this game (to give weight to the attacks)
Maybe one way to make the game harder at the end would be accumulating debuffs, because once you learn all the patterns, it does get a bit easy. But overall, great experience.
Good job!