I saw the gifs during development and I loved the idea, but I didn't think it would be this fun to play around!
The mana felt a little too punishing though. I didn't really understand how the two bars worked, and I feel like it was bugged on my first try? Like, the top one wouldn't fill completely, and when I ran out of mana I still had 3 or 4 potions.
But I still tried a few individual levels with the selection and it seems I had more mana to play with, even without all the potions from level 1.