Evocator

A large field within the magical arts are the evocations, somtimes called summonings.
This field covers the evocation of natural powers or manifestations as well as such for the sacred or unsacred. Both aspects cover a wide range of techniques and can bring forth many different entities or manifestations, sometimes of horrific power.

While the entities and spirits of nature and the elements might be considered neutral for the most part, there are things that should not be awoken or brought into the world.

A very interesting thing with this disziplin of magics is its age on one hand and the most famous practitioner.
Many legendes and myths clearly state that Turian often brought beings from other worlds to Turian's World. Thus it is obvious that Turian herself must have been a Evocatress or Summoneress.

Quoted from a recent lecture on Evocation at the Academy of Durunk.