[thejeff]

Two notes, since I've been playing with these in SP lately.

The big drawback to Einheres that you don't mention is that they are strategic move 1. This makes them a pain to combine with the faster skinshifters.

You mentioned communions of Volva, but it's not quite so obvious that any Galdermen with blood can join, or better yet lead a communion. This may be an easier, cheaper way to get access to the higher levels of Air battle magic. Also lets you use rejuvenation to wipe away fatigue.