Transformation Magic (変身魔法 Henshin Mahō) is a Caster Magic.
Transformation Magic allows its caster to change his or her appearance. While this Magic is a deep and complex art, basic Transformation Magic is relatively easy for Mages to learn. High-level Mages, such as Mirajane, are capable of performing this Magic easily in all of its levels. People from Edolas can also use Method Actor Box that contains Transformation Magic.
Basic Level: This level allows a Caster to change his or her outward appearance into that of another person. However, it doesn't allow the Caster to change clothes. The more a Mage knows about this level, the easier it is to perform.
Intermediate Level: Aside from its similarities to the basic level, this level of transformation is used by Mages to change their clothes and voice. The changing of clothes is different when compared to Requip.
Advanced Level: Apart from changing appearance and voice, the Caster can acquire all additional physical features such as wings or gills, and can even change size. According to Mirajane, this level is very useful in combat. This bears a resemblance to Lisanna's Take Over, but is different.