Hands down amazing. This is the best game I play this jam.
It would be cool if power-up dice could power up other power-up dice, but I could see that causing some issues XD.
Also, it would be cool if you could keep your mana (use a 4 power-up dice with a 2 shield to get 6 shields and save your extra mana for the next turn.) Without this, 3 power dice feel better than 4. But just a suggestion. I could see this being an absolutely amazing game.