That's some galaxy brain level puzzle I've had since baba is you. I'm surprised that you even had boss fights (which succ doesn't actually do things).
As mentioned from other comments, it's kinda unclear what will be succed and what will be unsucced, but it's pretty easy to get used to. A visual indicator would help I supposed.
Overall good visuals, concepts, and level design. Also someone played a fusion card at the wrong occasion and the outcome was catastrophic.