I defeated the bone king with an elf and yellow cards.
I had a ton of fun, the game is excellent and somewhat ambitious in the context. It looks and sounds good and feels perfect to control. I like the variety of cards and the character creation part so that you choose 3 sets to assemble your starting deck is super cool. The fatigue mechanism so that removing cards and not adding cards to your deck is double edged is perfect too. Finally and it's super important the damage and hps of your character and the enemies is appropriate, the difficulty is perfect for a jam for me, which added a lot to my enjoyment.
Steps are slightly smaller than I prefer, and with the elf the displayed cost of the cards you can acquire is 0 which is a bit annoying but these are really no big deal.
Thanks for sharing!