Yeah, I was thinking of using them for Undead attacks who are shapeless and whose fear projection is thus greater. I rekoned it would be a good addition to MERP's 2E rules of detecting magic in the PbP I'm running.
I still don't know how they can be fought being damned shapeless spirits.
I took the ideas from the 'Watchers' of Minas Morgul and Sauron in the First Age.
'Sauron was become now a sorceror of dreadful power, master of shadows and of phantoms, foul in wisdom, cruel in strength, misshaping what he touched, twisting what he ruled, lord of werewolves; his dominion was torment. He took Minas Tirith by assault, for a dark cloud of fear fell upon those that defended it; and Orodreth was driven out, and fled to Nargothrond.'
I'll have to check the EC, Olf, for dark elementals. Thanks for your answers!