I tried this encounter on my lvl 44 bard. Fully buffed and just couldn't hurt him. He stands there spamming heals on himself and never went below 85% health. I have tried it twice so far both times he just spams heals. I have tried not wearing any armour when speaking to him and it doesn't increase the damage I do either.
How did other people do it? Do I just have to keep trying it until I get a non heal spaming opponent?
How did other people do it? Do I just have to keep trying it until I get a non heal spaming opponent?