Congratulations on completing the game jam!
The illustrations are absolutely fantastic, each animal has a lot of character. The UI is very confusing, however, especially without any tutorialization of how to play the game. I think if the UI was self-informative it would be much more playable. The dice shape could correspond to its set of values, and dragging dice to slots on each card was not immediately intuitive.
The results of each roll could also be more clearly conveyed. After rolling the die, each card could show a breakdown of how the math worked out and the total health points gained/lost on each team. Additionally, if the opponent showed some information on their choice of cards, the player could then choose their own cards in response. They might want to heal or use another card class to reverse the damage back to the opponent for example.
Great work!