Board Thread:General Discussion/@comment-24942479-20180506031910/@comment-25926288-20180506032912

Ivy cursed them to not have access to their magic. Gothel's spell was returning magic (but the non-coven can't access that). So, they needed the curse to break to use the magic Gothel was returning.

That, or they believe for some reason that the curse breaking would bring magic to the LWM for some reason......for some reason.