Fields of Mythal

The three Fields of Mythal were the way the powerful arcanists of Netheril grouped their spells, similar to the nine schools of magic known to the wizards of later ages. Each arcanist was a specialist in one Field, had minor insight into a second and could not cast spells from the third Field.

Inventive
Inventives were spells used to create or destroy. A specialist in this Field was called an inventor.

Mentalism
Mentalisms were spells designed to influence the mind of persons or creatures. They were used by mentalists.

Variation
Variations were spells that changed and transformed things, energies and states, including other spells. A specialist in this Field was called a variator.