Elementalists are casters that focus on using the powers of nature to devastate their enemies.
An Elementalist will be able to choose between four basic elements, namely Earth(Geomancy), Fire(Pyromancy), Air(Aeromancy), Water(Hydromancy). All Elementalists are only able to obtain mastery over two out of these four elements as mastery over more than two of these elements will threaten the balance of the world. In effect, players will be able to choose two elements when they start. Each element will have its own skill tree, and the combination of the chosen elements will yield a third skill tree. For example, choosing Fire and Water will unlock the Fire skill tree, the Water skill tree, and the skill tree that combines Fire and Water.
A list of the combination skill trees
Pyromancy + Hydromancy = Atmomancy (Steam)
Pyromancy + Geomancy = Infernomancy (Infernos?)
Pyromancy + Aeromancy = Thermomancy (Heat)
Hydromacy + Geomancy = Cryomancy (Ice)
Hydromancy + Aeromancy = Electromancy (Electricity)
Geomancy + Aeromancy = Amathomancy (Sand)
For example, an Elementalist who chooses Water and Earth will be able to unlock Hydromancy, Geomancy, and Cryomany.
I know some of the combinations sound weird or outright stupid, so these are open to comments, suggestions, improvements, or anything constructive
I'm thinking Elementalists could be Ehrui or Kod-Mezu specific... Maybe both