Okay, I had some time to talk to Elizia, and she better explained the situation.
Basically, "Dor'gha nuu sh'tar" is a phrase that would be equivalent to offering a duel for honor against another Orc, but it has various connotations within the culture. Since Orcs are a species extremely tied to culture and personal honor within a tribe, this phrase can also apply when someone wants to replace the current tribe leader, claim someone as their doormat, or even as a way to call a strong male or female to marry them.
The closest translation I can imagine is "Submit to me"... Wait, does that mean that Orc way back then wanted to hook up with me? It must be!
Well, but even so, since Ragna changed the terms of the challenge to give me an advantage, it was the equivalent of me claiming her as a subordinate. She will obey me as much as I want, especially with Elizia's special addition in the mix.
