[Lazy_Perfectionist]

I'd probably use Courtiers to lead up to about 30 undead (already there thanks to death magic), and cast Nether Bolt/Darts. It's like they are tailor made.

Where was the courtier in the original post, DrPraetorious? Anyways, what would be a rough cost? Cheap, Medium, Expensive?

Not only could the Courtier(?) buff himself, he could be communion buffed. A power of the Spheres would allow, late game, them to all cast Disintegrate, and earlier on they can spam frighten or dust to dust as needed. You could also give them a national combat summon based off of LE Tien Chi's Call Ancestor if you thought they needed some sort of boost in early combat. Nothing overpowering, mind you, just something that in enough numbers will act as small speed bump in combat, esp. to cavalry charges.