Hi, my name is Cody Skahan and I am an aspiring Games User Experience researcher, which entails running usability reviews of games to identify usability and UX issues that prevent players from experiencing your game the way you expect.
I saw your post looking for playtesters for your deck building game, and wondered if you would be interested in a usability review for it. In this capacity, my review would be focused more on behavioral considerations (how players will interact with various aspects of your game) and less about attitudinal factors (how players will like your game). I can, of course, give my personal opinion, but my official report identifying the top issues I find will focus on these usability problems. I see you are very interested in feedback about balance, interaction of cards and presentation of cards feel for the player, and those types of questions are right in my wheelhouse :).
I think your game idea is really interesting, but I am also interested in sharing this as a case study for my portfolio, and perhaps including it on a blog. This might create some extra publicity and interest in your game, so hopefully a positive thing for both of us.
Let me know if you have any questions and if there are any other focus areas or deadlines that I should consider.
Best,
Cody