Nice Job! Very polished game. Reminds me of Slay the spire.
One small problem is the dice description gets blocked a little by the tutorial button. 
Ah sorry I hadn't read the other comments.
You could highlight the dice that are still playable with your remaining mana.
I also didn't understand what the health potion did. It doesn't seem to appear on screen anywhere.
The problem of dice going off screen is solved in full screen mode.
This game has really sucked me in!