Okay, my own concept for this Clockwork Assassin is rapidly moving out of the realms of this mod, and into the next potential mod.
I don't know, I haven't used Edi's DB, maybe with the number of sacred mages in the game, a summon that required E4/H1 would be available to enough nations to justify it. Anyways, I would give it 2 Holy Scourge as built in weapons. So there, haters.
I'm growing fond of this Aether Spawn spell as well. Would it be possible to give their commander the unique ability to cast Gateway for free? Give him a small Magic Leadership number, and no normal/undead leadership, and that should limit abusability of the spell. They wouldn't be insanely mobile, but would be able to jump to sieged labs before reinforcements arrive, for a nasty surprise.
Or even better perhaps, make the summon just give you 1 guy, and he has the Teleport ability. In combat, he automatically generates "Aether Tendrils", which are size 1 units with the small AN attack.
I like the idea of weakish units with autosummons in combat. I'm not married to one yet, but there's got to be something here that it would work beautifully for - could be this guy.