User blog comment:IamJakuhoRaikoben/Chapter 422: Orochi's Fin, Review./@comment-3285005-20150303114520/@comment-7418318-20150303131504

I just hope that this power will stay unique to Lucy. Or if Yukino end up having that power then I hope it'll only be after Lucy taught it to her.

It'd really cheapen both Lucy's abilities and the sacrifice Lucy had to go through to gain this power if other Celestial Spirit Mages could just come up with this magic on their own without sacrifice or strife.