Satan Soul (サタンソウル Satan Sōru): Satan Soul is a very powerful spell, as well as the source of her epithet The Demon (魔人 Majin). Satan Soul allows her to take over the appearance, abilities and powers of a demonic being. When she activated it for the first time after two years of abstinence, she released a large magical blast which destroyed the surrounding area. Satan Soul is initiated by seemingly covering Mirajane’s body in flat, square-shaped scales-like parts, which subsequently disappear, revealing her new appearance.[21] In such state, her eyes, eyelashes, ears, and hair all change drastically, and dark, thin markings appear all over her body. Her forearms and hands become covered in scales, and each sprouts a fin-like protrusion on its outer side. She also grows a large, stocky tail, seemingly made of metal plates or scales. Her clothing also changes, with any attire she might be wearing being replaced by a dark, skimpy one-piece suit revealing her arms and legs, which is open on the front and the back, exposing most of her belly, wide cleavage and upper back too. She also dons a pair of gauntlets covering the back parts of her transformed arms.[22] Using this spell is extremely exhausting for Mirajane, so much that she cannot execute it in consecutive reprises.[23] However, after her 3-month training in X791, she was shown to be able employ her Satan Soul: Sitri (which Erza commented on being one of her strongest) twice and her Satan Soul twice within the span of a few hours or even less, without any signs of fatigue.[24][25] In order to utilize her Satan Soul form, Mirajane's body possesses the same Demon Particles found in the bodies of Tartaros' artificial Demons, resulting in an immunity to any physical alterations and a unique means of recovery.[26]