User blog comment:General MGD 109/Who's most powerful?/@comment-4135736-20111206083232

I do think he should be a bit vunerable but not too much as I do know he can't be invincible. Maybe the reason why Merlin struggled a lot when fighting Morgana was because she caught him off guard because the first time she attacked him, Merlin was holding the Fomorroh and the second time he got distracted by the dagger she levitated at him. As for losing his powers in front of the Dorocha, I would have liked it a bit more if a had at least had a defense against them e.g. showing him with a torch like the other knights rather than making him completely helpless especially after the sacrifice he made for Arthur.