[Cheezeninja]

Petrify and Drain life are the best Anti-Sc ranged spells i believe. Petrify because a success is instant death and a failure is still parylization. There's also a death magic item that gives the ability to cast drain life, and also makes the AI more willing/likely to cast it (skull standard?). Some sample armies might be...

Vanheim

Living statues to provide lifeless (important against life draining SC's) and tough support.
Van commanders to cast false horror (more lifeless support, thats also free)

This would be the front of your force that's used as a screen for several dwarfs casting summon earthpower then petrify over and over.

*OR*

Blood nations

A literal horde of vampires. They are immortal, undead (dont provide life), flying, and their attack is a lifedrain.

*OR*

Death nations

A group of D4 mages set to cast drain life/summon skellies/drain life/summon skellies/drain life. With a little skeleton chaff in front to keep them alive until their own skeletons are enough of a shield.

Pangea could also be very good at casting petrify, petrify, petrify, relief, etc... with maybe some living statues out front to hold the enemy up.

Basically i believe a SC killer army should attempt to include a combination of lifeless troops, because SC's feed on meatbags, and also a armor piercing non resistable spell. Prefferably petrify or drain life, although there are others that rely on the SC not having that resistance.

Alteration btw gets you both of my favorite anti-SC spells, plus a bunch of chaff spells, not to mention all the spells YOUR SC's should be using. Its my favorite path aside from possibly conjuration...or construction....or maybe thaumaturgy.... possibly enchantment for the Go*'s...wrath is nice too....and bloods not even a path, its more like a college of its own....sigh.