I love this game. The witches are cute and the gameplay has me hooked!
My main complaint is that the game has a tendency to softlock, especially common when coolant or viscous is in play (things that change the cast time.) It can throw the game into a broken state where casting potions doesn't work and nobody can win or lose regardless of sub-zero allure.
There's also a bug with expansion elixir in tier 5/6. If ingredients grow too large, they can spill out of the pot into the other player's, even potentially cause the other player to overflow. Maybe there should be a maximum size for ingredients to grow to?
Also, even after the nerfs, bovine elixir is super oppressive. Maybe casting a bovine elixir could downgrade it once or remove it from the bag? Maybe corruption elixir could remove it from the bag after converting it?