It's nice to see a tactics game in the jam for a change. The combat system seems to be pretty complex and well crafted but i think learning curve is a little steep. The how to play section is a nice touch and actually well made , it explains some of the mechanics of the game buti still got puzzled on how the combat system works, i think it's too overcomplicated for a jam game and required further instructions.
I don't like that the characters and cards are entirely random. Every char starts with one free card but for example game starts a char with a melee weapon, that char has 4 max HP, it will go down with a single hit. I assign piercing arrow to a char, it can shoot only one tile away. One char starts with a teleport spell, but none of the cards in the card pool can be cards that can be useful with teleport and it's not a useful card by itself. I didn't understand how combining the the cards work at all. You gave an example of shield and melee weapon on how to play section but i couldn't figure out to apply it to other cards. Also pls change the attack targeting system so players don't hit themselves. I hit my own character while trying to cancel the attack by clicking on the character and taking damage a couple of times, it was really frustrating :)
I like the Final Fantasy style character sprites and UI. It's a pretty polished game. It looks like a protoye of a FF: Tactics or Tactics Ogre kind of game with roguelike elements and it's successful at it to an extent. Into the Breach is a great example of a tactics game/roguelike fusion. I hope that you will create a game like that in the future.