Elementalist
From Multiversal Omnipedia
An elementalist is a wizard who specializes in one of the four elemental schools of magic: Elemental Air, Elemental Earth, Elemental Fire or Elemental Water. An elementalist can use spells from their school with special effectiveness, and spells from non-opposed elemental schools as normal. However, they cannot use spells from their opposed element (Earth is opposed to Air, and Fire to Water).