The image of a Cyclops with Stymphalian Wings, vine shield, two main gauche, flying through the sky and sqashing, entangling, and impaling enemies, is really hilarious!
Run away! Run away!
Umm... as for Ermor, at least in Doms I against the AI, it didn't take terribly many priests to defeat Ermor. Even as Ulm, using just Holy-2 indie-rasied priests, if I had 2-4 in each battle, I seemed to do just fine defeating even pretty large Ermorian attacks, mainly by banishment.
The problems occur when you aren't ready, and/or Ermor builds up to a really enormous size/strength, and/or the sun goes out, and/or there is a human doing intelligent things with them.
PvK