Lightning Body

Lightning Body (雷体化 (ライトニング・ボディ), Raitoningu Bodi lit. Lightning Body Transformation) is a staple amongst extremely powerful Lightning Magicians; counting as their 'super mode' of sorts; alongside Heat the Beat of Fire Magic and Sierra of Water Magic.

Description
When performing Lightning Body, the user integrates Lightning Magic into their flesh and fuses it with their body. In doing so, they become a mass of electrically charged particles. Once they have become a mass of charged particles, they separate positively charged particles from their body and positions them to create a certain extent of an electrical field. The charged particles and electrical field can be changed at will from a latent state to an active one, and vice versa, by the user, who has taken the Lightning Magic into their body. When the electrical field becomes active, its powerful electric potential difference draws the negatively charged particles that make up their body toward the positively charged particles of the field with tremendous force; turning themselves into a lightning bolt, whose size can vary from mere, fast-moving sparks to large pillars of lightning. Together with the signature intangibility of Elemental Magic, which allows the user to let physical and magical attacks pass harmlessly through their body when they're transformed, this form also grants the user some traits typical of real lightning: they're shown capable of freely moving around at high speed and to travel over long distances, rapidly appearing at their destination from places away from sight as though as they are teleporting, as well as to electrocute everything crossing their path, with the voltage of their bodily electricity being high enough to wreak havoc. Due to the velocity in which the user attacks, the user's attacks are enhanced drastically; however, their attacks become more predictable the more that the battle drags on, and when transporting themselves, the user can only transport to one point of a place per transport, changing a point in space is next to impossible during transport.

Trivia

 * As the gif shows, this spell is in canon, but User:Perchan simply decided to expand on it because of how popular it is.