Practice of magic by the summoning and
binding of entities, usually intelligent.
Different practices basing symbolism off
of different groups. Most common
is a basis of Christianity and Judaism with a weird admixture of Greek and
Egyptian mythology. Litterary examples
include Prospero and Faust. Actual
examples include (supposedly) Paracelsus.
Seems to be dying out in favour of other
forms of magic, and regarded by most as
silly, immoral, or dangerous.