Yami
Yami is a second level evocation with an instant casting time, a range of sixty feet, a duration of up to ten minutes, requires concentration to maintain, and has a material requirement of a piece of coal.
Yami creates a fifteen-foot sphere of darkness that absorbs all light within. The outside of the magical area appears as perfect black with no reflection.
The spell works by absorbing photonic energy and dissipating it as heat. Since the sphere has such a large surface area, the heat is released efficiently.
Fire Departments in the U.S. have been using yami for the better part of a century. By casting the spell around a fire, the sphere acts as a massive cooling fin. Since one of the legs of the fire triangle is heat, the other two being fuel and oxygen, the fire is quickly snuffed out. Paramedics also use the spell for treating hyperthermia by cooling an overheated patient.