Maglor has never seen Mairon in any form but that he has worn on the battlefield. Still, he has walked among enough Maiar to recognize something about him, if only in the lordly, otherworldly bearing. That he comes with a dragon, however, does not set Maglor's mind at ease, and he remains tense and on guard. He makes no move to put his weapons away. Although he has no hackles himself, if he did they would be raised in return. He glares.
and then I fail at timeliness
"Are you not its master then?"