User blog comment:EvanDude345rv5/Fairy Tail 3 chapter special Part 2/@comment-4700320-20130717141132/@comment-7418318-20130717144911

I agree.

Gray said that he never felt magic like it before, but that it "reminded him of"/"felt similar to" (depending on the translation) someones magic. So I guess it's something related to Iced Shell, but not the exact same.

Also I don't see how Iced Shell could be used to freeze an entire village, unless the culprint was able to mind-controll several people at once and forced a hole group of ice mages to sacrifice themselfs.