Light Tanid

The Light Tanid is a magic unit with max Magic growth, at the cost of Mana growth.

Combat
Benefits heavily from mana increasing Traits. Alternatively you can give it the Telekinesis trait to make it a melee unit, so the awful mana pool isn't a problem anymore.

Breeding
Incredibly low Fertility/Virility makes them dismal at Breeding.

Trivia
Channeling mana through many openings at once decreases efficiency.