Schools of Alteration

The Schools of Alteration are a set of 12 categories that outline the ways one can make use of Alteration. They are commonly split into 3 groups known as "Arts". These are the Elementa Arts, the Spiritual Arts, and the Natural Arts.

Elemental Arts
The Elemental Arts consist of: Elemental Arts are often used as starting points for new Espers, and are commonly taught at basic levels throughout the world. Geokinesis and Hydrokinesis are, by quite some margin, the most commonly-used Elemental Arts, as earth and water are both extremely common and provide clear feedback to the Esper-in-training. Pyrokinesis and Aerokinesis are closely tied together (as one needs to manipulate the level of oxygen in the air via Aeromancy in order to produce fire), and the two are known for being exceptionally difficult to master.
 * Pyrokinesis, the creation and control of fire
 * Hydrokinesis, the creation and control of water
 * Geokinesis, the creation and control of earth
 * Aerokinesis, the creation and control of air

Spiritual Arts
The Spiritual Arts consist of: Spiritual Arts are sometimes referred to as the "Intermediate Arts", because when compared to the more basic Elemental Arts, they are arguably more difficult to learn and master. Psychomancy and Solomancy are closely connected, as tapping into the mind of another being requires direct manipulation of its Sol. As a result, the two are often taught simultanesouly in the early stages of Spiritual training. Mirroring this, Necromancy and Animancy are also closely connected, as Animancy requires implanting a Spirit (or at least its energy) into an inanimate object.
 * Psychomancy, the manipulation of thoughts, actions, and memories
 * Animancy, the manipulation of inanimate objects, such that they appear and/or act alive
 * Necromancy, the manipulation of Spirits, and the energy they possess
 * Solomancy, the manipulation of another body's connection to Sol

Natural Arts
The Natural Arts consist of: The Natural Arts are commonly called the "Advanced Arts", because mastery of them generally requires a great deal of prior experience with the other two Practices. Notably, each School in the Natural Arts can trace its roots to one of the other 8 Schools:  Alchemy was founded after its creator mastered all 4 Elemental Practics; Extracognition was originally a subset of Psychomancy, before becoming its own School; likewise, Clairvoyance and Possession started as subsets of Solomancy and Necromancy, before becoming their own specializations.
 * Alchemy, the ability to change the properties of chemicals
 * Extracognition, the ability to share one's thoughts and experiences with another body
 * Clairvoyance, the ability to percieve the world without the known senses
 * Possession, the ability to non-physically bind two bodies togeother by connecting their Spirits