[Loki makes the 'blah blah blah' motion with his hand.] They couldn't have been that clever, if they got themselves killed by you.

[Noting that Garrosh is not looking at the particular illusion, Loki dismisses that one and has another appear as if stepping from invisibility by the door.]

You have me there. I am so utterly concerned with your good opinion of me that I would be happy to join you in a common yard brawl, in which I will also let you dictate the terms of combat in accordance to the rules of your realm.

[His battle armor phases on as he (or, well, his illusion), gives Garrosh an intensely sardonic look and quite confidently walks out the door.]