Wonderful in every way! Awesome original idea, great art, and clever design. I love all of the little effects like potion fill levels bouncing around, the presentation is very polished. The sound effects are phenomenal, they add so much extra ambience to the experience! I love the variety of transformations and the incredible variety of strategies to accomplish them that are available!
I would love to see this game expanded! I recommend rebalancing some persistent effect to offer more playaround options. Currently potions of corruption are an absolute must for later stages because eggplants and spirals can and will make your cauldron explode endlessly if not dealt with. My suggestion is to reduce the size of persistent items whenever they overfill the pot and remove the smallest ones, this change would keep the theme without making the game potentially unplayable without a proper counter. Adding slimes and bovine milk to inventory can also cause some clutter issues, perhaps the amount added should be doubled but they don't return after being played? Excluding any kept potions from the swap offering pool at the end of a round could help players tailor their inventory a bit better (they don't need more of potions that they're keeping to duplicate or upgrade, and they certainly don't need those they are trying to swap with something new).
Incredibly fun and endlessly addictive! It's a really great game, and I very much hope to see it updated in the future!