User blog comment:Avatar226/2013-2014 S-Class Championship Contest/@comment-7577835-20131228063230/@comment-4489126-20131230033554

Those are the main. Another one is Erza's artificial eye.
 * 1) Doesn't work on the human body.
 * 2) Can only twist space in one particular spot.
 * 3) Robe of Yūen.