What to do about Ermor ....

[LintMan]

but don't attack ermor with a single SC . they are one of the few nations where SCs are not so good because of the following :
-swarming , so some undeads will always hit
-undead = no healing through lifesteal , so no fatiguerecovery

For magnate's Firbolg SC's, the loss of lifestealing against undead could definitely lead to fatigue issues, but banelord SC's don't really have that concern since they are 0-fatigue anyway.

Swarming though is a concern for some single sc's as magnate saw. Better to use them in pairs which splits up the attackers, or use soemthing like a trampler SC that eats up swarms of cheap units. A favorite trampler SC of mine:
Summon a Golem, add these items
- Charcoal Shield (gives flame shield)
- Scrutata Volturnus (occasional shock attacks)
- Starshine Skullcap (+1S, +MR)
- Stymphalian Armor (gives flight, fear and tampling!)
- Boots of Quickness
- Amulet of Antimagic
- Stone Bird or Dancing Trident (gives an attack, since he's not carrying a weapon)
With 3S, the golem can teleport from the lab to a distant province, and in battle can cast Body Ethereal, Astral Shield, Personal Luck, Twist Fate, and Astral Weapon before stomping away.

That's pretty high-end, though and not well in line with Jotun's magic paths.