Really well polished! The gameplay loop worked really well and I think it's genuinely incredible just how much work you've done in a week, from the art which is incredibly well fleshed out and designed to all the mechanics. It reminds me of live card games like exploding unicorns, and could be adapted as such if you wanted to. The main bits of feedback I have are 1) I wish I could have skipped a lot more and taken less time, especially when I'd built my deck and was waiting for the round to finish, and 2) The bosses did more to combat you. It felt a little awkward and passive with the only challenge being a timer - some sort of a turn based battle system could have done quite nicely, with the timer as well. But seriously, really great job!