The idea is interesting, but it is hard to do both tasks at the same time: moving the paddle and trying to understand what the cards do. Maybe you could add a mechanic that puts the game in slow-motion lapse so the player has time to plan which card to use.
I liked the visual style in the cards, and it is a shame that the game doesn't have sound effects and music.
If you could comment and rate our game, we would appreciate it.