I am currently writing an urban fantasy novel where magic users are broken up into five main groups that can manipulate the seven primal energies of existence.
types of energy
Life: the power of creation, flows strongly through anything that is effected by time.
Death: the power of destruction and change, everything must end at some point.
Water Earth Fire and Air: the building blocks of creation, everything is comprised of these to some degree
Time: the thread that binds all things together for better or worse.
the Four Types of magic users:
Wizards: have great power but need a focus in order to direct it. (staff, wand, book, cellphone what have you), can manipulate all seven energies equally.
Sorcerers: can call up their power by sheer force of will (they make the big booms) however their power is controlled by their emotions so most go under a great deal of training in order to learn control, that is if they don't explode at a young age. are strongest in the four elements
Witches/Warlocks: evil little bastards whose power comes from making a deal with a demon. they make the denarions look like girl scouts. they channel their masters evil will into our world so they can manipulate any of the energies without a use of a focus.
True Necromancers: the rarest of the magic users, most don't think they exist, their power is entirely centered on the passage of time from life to death and thus have strong influence in only those three powers in that regard. they are not evil
White Magus: the exact opposite of True Necromancers they can only use life energy. they are not always good guys.
basically i am asking if this works for you or if you have any suggestions on what i have so far.