User blog comment:IamJakuhoRaikoben/Chapter 515: I Am You... You Are Me, Review./@comment-112.202.164.133-20161221113732/@comment-2214433-20161221142302

Besides, if it was Ajeel's sands, how would she suddenly be able to use it while still being under the effect of said sands?

Clearly Marin's doing. Erza regained her magic as soon as Lucy knocked Marin out.