State Magic

State Magic (状態魔法, Jōtai Mahō) is a Caster Magic which allows its caster to manipulate a selected thing's state of matter.

Description
State Magic grants it's caster the ability to alter the state of matter in a chosen thing. Using water as an example, one would be able to alter it from its solid state (ice/snow) to a gaseous state (water vapor/steam/mist). This magic is only effective on substances which have specific states. This magic would not be able to be used on, for example, fire.