A severe problem

[Novi]

Hi, everyone!

I've been playing Dom III for quite a while now, but I feel as though I barely got to know it... (If it were otherwise I would probably not be making this topic)

The situation is as following:
I'm playing EA Ermor with my pretender a wannabe SC (I picked a cyclops 3A 6E 2W, but I still have no idea how to use him properly xD). I focused on dominion quality rather than on magic (since Ermor does not possess any stupendous holy units) so now I have growth 2 order 3 and dominion 6 (well, a bit more due to empowerment and temples).
However, I'm facing 2 major threats, one of them being an enemy SC and the other Agarthan bone-crushing dominion and their troglodytes (damn trampling!).

The enemy SC seems to be almost invincible - a father of winter (methinks that's his title) with W9 A4 E4 N5, chill effect and buffed (invulnerability - 30 prot., 20 MR).
My units can't even scratch him, so I'm wondering about other ways of defeating him (Soul slay maybe? Powerful summonings?).

As for the Agarthan threat - most of their units are incredibly easy to kill (with little or no losses on my side) the only exception being their troglodytes and oracles (who can cause PLENTY of losses using magma eruptions, blade winds and so on - that's also the reason why elephants don't work as well as they should). So what to do? Should I try to overwhelm their dominion or is there a faster way? Note that my research and my gem income are both high.

Any suggestions?