Luminomancy is a form of Thaumaturgy connected to the creation, destruction and manipulation of light. It is generally considered one of the most difficult forms of thaumaturgy to master, and as a result is also considered one of the most powerful. A Luminomancer, is able to manipulate the intensity, focus and color of light by force of will alone. As such, they can concentrate it into powerful burning beams or illuminate an entire room with a single candle.
It is considered in opposition to Somnomancy, which is focused upon the creation, manipulation and control of shadows.