In the Solo Adventures Mode of the Boomsday Project, in the Mirror Mode of the Puzzle Lab, the seventh puzzle with Astromancer Arwyn titled “Aha!” is problematic because the new version of the Sorcerer‘s Apprentice cannot reduce spell costs to 0. This makes it impossible to complete the level. I suggest modifying the clear conditions, such as keeping Archmage Antonidas at full health. I hope this bug can be fixed soon to allow novice players to pass this level.