I just got an idea: Magolor epilogue in little witch academia.
Basically instead of magolor being sent to the epilogue dimension in Kirby's return to Dreamland deluxe, he's sent to the little witch academia dimension and has to regain his magic powers to get back to his dimension. With the crown remnants also being sent there like in the original story
The crystal apples fragments would also probably be there as well and would have a similar purpose to the one they had in the epilogue. The master crown and the apple fragments also probably have something to do with the magic returning in the end, for now though Idk.
Not entirely certain of the other things regarding this crossover idea, I mainly posted this because I couldn't help but think of epilogue magolor telling the mages in Little witch academia how he was a pretty powerful mage before his powers got somewhat drained, and those mages end up seeing first hand that he wasn't lying when he finally gets his full power back at the end.
I also haven't watched little witch academia in a while so sorry if this post doesn't make sense or is a bit messy.