Thanks for sticking through it! I understand how it may be hard to get the flow of the game in its current state, some visual aids would really help. I appreciate the feedback.
I believe the invisible card are an error from the card being above level 7. I should have opted for generated cards so the game could keep up with the power scaling. One of the first changes I will make.
Glad the game held up alright, and thank you for writing some feedback!