[Alneyan]

You have a point Deccan. I did go with the assumption that "A" stood for Air in his post, but as you said, there is no evidence about this.

If it was indeed "Power of the Spheres", your Great Enchanteress required an Astral gem to cast the spell; since she creates them automatically, she should have cast the spell (especially if it was her first spell; with Astral 6, she wouldn't have had too much fatigue either).