These can be unlocked before your character is a high enough level which can happen in some cases. (Cornac's for example)
Spell/Aether
Wild Gift/Oozing Blades
Wild Gift/Corrosive Blade
Wild Gift/Eyal's Fury
Celestial/Radiance
Celestial/Crusader
Psionic/Discharge
Psionic/Nightmare
Steamtech/Furnace
Steamtech/Dread
Psionic/Dream Forge
Some categories unlockable before reaching minimum level
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