The problem with actual dedicated mages against Connlaoth is that the more powerful they are, the more Connlaoth will send their the Mordecai. (The Guard Duty thread is a good example of this.) That said, there are always those who have something special to balance themselves out. I don't have any Connlaothians who would be a part of this. The only one
from the country who qualifies
hates the country. What I can offer you are outside parties who can be convinced to help.
Keefe Zarla - For years now, Keefe has been an assassin, killing those who attempt to stomp out what is different or what deserves a chance to live freely. Corrupt officials, slavers, Mordecai, and more have been here chosen targets. She uses a combination of assassin techniques and ferromancy, the manipulation of metals to a high degree. That guy from Connlaoth who hates this country? He's a friend of hers, rescued and trained by her. Lately, though, a terrible vampire hit her hard because HE prefers it that Mordecai and Connlaoth's government keep on keeping on, because doing so makes them all helpless before him. Keefe has recovered from the attack, mostly because of her friend, Sano. Though she's afraid the vampire will appear again before her, she'll get back on the horse if asked to.
Rena Goldswith - If you've been talking to DreadFate, you know that I've been angling to put this one into Guard Duty on the side of mages. If not, I'll explain why. The idea was that since this war has indeed hired sellswords and others for-hire, they would reach out to this lightning-using warrior from Serendipity. Why her? Because they could have learned of, and convinced her with, her past. Years ago, an army of bigots roamed the Seren lands, trying to purge it of all but 'pure' Serenians, so that there would only be the most-human ones. Since Rena's mother was an elf, you can see what they (The Silver Horde) thought of
that. Suffice it to say, in a tremendous battle, those people were killed to a man, though her parents also died on the process. The right to live and be free because one is different is somethng Rena fights for. Though she's not strictly a mage, she's very gifted.