I've had this floating around in my head for a while. This here is basically just the concept written out. I want to avoid outright saying what it's crossing over with, and let you figure it out. Not sure the idea is interesting enough to do a real fic with though.

Anyway here it is. Warning it's long:

https://docs.google.com/document/d/1XizqcowNtYQf2hH-aIzqm1BrLFbVp7aPd0Nu7tJ7a_Q/edit?usp=sharing

7968281
What is this a crossover with?

7968282
OMG. I think it's the Care Bears Movie! That's the Evil Spirit who corrupted Nicholas.

7968607
Correct! I've always loved that villain, and got this idea for an Equestria Girls crossover.

7968615
Ah. So would it be just the Evil Spirit, or would the Care Bears arrive to aid too?

7968669
They'd have to show up. Honestly if I did more I'd probably have Nicolas himself show up at some point. Maybe even the people from the second movie. The whole thing would just be campy silly fun. Or at least that'd be the aim.

7968607
I thought the same thing