[Loki lets out a dry, rasping hiss that somehow conveys annoyance and amusement all in the same breath.]

I should kill you for your insolence, mortal, speaking as such to me, but you are one of the few my boy would prefer to remain alive. He pledged himself to me long ago, and it's my power that kept him alive.

[He bares his teeth in a too-wide grin as he circles around Damien, spreading his arms to either side.] But you have answered correctly, and so, I won't see if your death reunites the two of you. What would be the point?

[Just like before with the sword, Loki dissolves, but this time he doesn't bother to reappear. He got what he needed, after all.]