Thanks! I had a lot more ideas for cards that due to time (and my lack of art skills) we couldn't implement before the deadline. Definitely an area we can expand on.
Yeah we didn't have a lot of time to aggressively playtest/balance the cards, so I went with my gut. There's certainly power scaling, even I haven't been able to beat all 5 rounds of the game.
Yeah isometric was chosen because it's the 2D perspective that shows the most faces. Keeping track of the hidden faces is part of the puzzle! I agree about the controls though, future builds might add some more hints kinda like the legend in the top right.
Thanks for the feedback! There's an options menu that allows you to turn the animation speed up. We set the default to be normal because that seemed like it would let people realize what's going on.