Summary pulled directly from Steam - Some text may only be applicable to Steam platform

Grey Wizard
Disciples of the College of The Grey Order, Grey Wizards study Ulgu, The Lore of Shadows. It is an illusive Lore that twists the minds of its targets.

Spells

Smoke & Mirrors (Augment)
Map wide speed boost for friendly troops

Melkoth’s Mystifying Miasma (Direct Damage)
Strong vs multiple combatants, slows movement speed

The Enfeebling Foe (Hex)
Reduces target’s melee attack and melee defence

The Withering: (Hex)
Reduces target’s armour and leadership

The Penumbral Pendulum (Direct damage – wind)
Magical damage, large area of effect, strong vs multiple units

Pit of Shades (Vortex)
Magical damage, large explosion area, strong vs multiple units, disrupts units

Okkam’s Mindrazor (Augment)
Imbues bonus magical damage and bonus armour-piercing damage