[VedalkenBear]

Bob, you asked for pre-7 Research that could affect Undead. I found, in about 5 minutes consulting the rulebook, any number of spells and/or items that can help to even the fight. I then reported it. Did I say that these would instantly win the fight for you? No. I was answering your question. A question, I might point out, that with a little bit of researching you could have answered yourself. Since 'LE Ermor is so powerful' is a common complaint of newer players, I (perhaps incorrectly) assumed that you did not know of common counters to them.

Now, if we're talking about Marignon? You have good priests. And, to be honest, if I knew that Ermor was in a LE game, I'd probably make Inquisitors my researchers, and so I should have ~20 by turn 25 (and those are level 2 priests, not 1). Will it slow down my research? Possibly. OTOH, they're very low upkeep, and their research isn't bad with a good Magic scale (which will help when fighting Ermor in your own Dominion).

IIRC, LE Marignon still gets Holy Pyre, which gives your Goetic Masters something to throw in combat (and they'll last longer with Phoenix Power). Okay, scratch that. Unless the rulebook is incorrect, it's only ME Marignon that gets it. Still, there are rather common Fire evocations they can throw. If you're trying to do fast Blood magic, they can throw Hellfire.

As for a new player? I don't think you want to sling that around without some proof. The fact that I don't have problems with LE Ermor whereas you apparently do would seem to be counterindicative that you are more experienced than I.