Yeah haha , the goal was to make it rythm based but you know how game jam goes, time runned out :( I agree with most of the point you brought up, the card in the shop for example were supposed to be new one to deckbuild but again no time in the end. For the spawning card component that's weird it's the first time I ear about it!
Anyway thanks for all those feedbacks!
Glad that you at least like the art!