Thanks so much for the kind words ! I'm a big fan of giving players immense powers with the ever-present risk of going too far and I thought this philosophy of risk/reward would fit the aesthetics of FIST.
The enemies section was made near the end of the jam in a bit of a rush so it feels too rushed for my taste. I'm thrilled you like it though and expanding it is definitely on my to-do list for the second version.
Concerning the balance, it is the part that I'm the most unsure about. I tested it with friends of mine very quickly in a mockup scenario and it felt fine, and since the idea comes from other systems with similar mechanics, I would think it's fine. I don't know for sure, though I intend on testing it in a real session soon.
I have a lot of ideas for KINMAKER that I didn't get to expand on and plan to continue to work on it (After reading it back a bit, I saw a few spelling mistakes. Embarrassing !)
As for printing it, I looked some time ago at some card manufacturers for indie games to have a professionally made deck for the reference cards. I might propose it for the second version.