[Taqwus]

Another note is that every Starspawn has Astral; holy Starspawn have astral-1 (2 if the random falls on astral) and the pure-mage Starspawn have at least Astral-3. That can give them access to Opposition, Enslave Mind, Mind Duel et al. Keep that in mind if you bring in astrally skilled commanders or magical units.