Interesting game!
I also have thought of making card game where you play with/against three other NPCs. Card games can be tricky to develop quickly during jams, what do you think?
The game would benefit from clearer UI. For example P2 to P3 is confusing when you don’t see the player names, also the font “ATTACK” can be read “ATTACH”, so I wasn’t sure am I attaching the card for some combo or attacking.