I must say, this was one of the more engaging games for me in GDKO so far. As a fan of card games, I found it quite interesting. It was impressive to see that you implemented two things in your game that I cut out from mine. When you mentioned having summons of other players' characters, I felt a bit jealous. I really wanted to incorporate fun cards that represented other games from GDKO as well, but unfortunately, I ran out of time.
Secondly, I wanted to include a power system where players could sell cards or transfer power to other systems/weapons, as this would have fit my starship theme. However, I thought it would have been too complicated to implement.
I understand how difficult it is to program card games, so you really set the bar high for this technical round. On a side note, I typically prefer mouse controls for card games, but your controls worked well enough, it just took a little bit of learning.
Great job!