Thorn Defense is a defensive move used by Crona, Ragnarok, and presumably Black Clown by making use of the Mad Blood. Crona crosses their arms as multiple thorn arrows appear from beneath their robe and shoot upwards in front of Crona like a fence, allowing them to block multiple frontal attacks. The thorns damage whatever comes into contact with them and are durable enough to withstand a barrage of attacks; however, Maka and Spirit's Witch-Hunt and Demon-Hunt manage to break it.