I agree that that seems to be the conditions Utterdark sets forth. Dispell or lose. But are there no other nations and spell combos which are essentially the same in effect? Such and such nation casts X global and keeps it up, we are dead?
I don't have enough MP experience to know for sure but dominions is so versatile I would be surprised if that was the only insta-win combo.
I'm definitely into conceding and in fact do so.
Hail Ermor etc etc..
Rathar