As they said below, some player feedback would be really appreciated. The game is incredibly fun, but I think that the time for choosing the cards is really low, it makes it really hard to choose what you'll do. It could have a really short tutorial on the mechanics, just to teach the player how to play. The visuals are enchanting, I must say, and the dynamic gameplay makes it even more appreciated. I was thriling when I heard Through Fire and Flames, but I don't think that it is a good way to have battle music. Making your own music could be a great way to make the battles memorable and unique. As the game is really hard on timing, a bit of stress relief such as a storytelling bit could be really appreciated between levels, to manage the pacing of the game and make it more digestable.
Overall, great game! I really enjoyed the battle and mechanics, the visuals are really cute, being the thing that drawn me to the game, and the dynamic mechanics make it really engaging! Awesome job!