Childermass stares blandly at Strange, then at the offered mirror, and then right back up to Strange again. He doesn't move to take it, pencil still poised in hand mid-sketch. He is as impassive as ever, even here in the middle of Wyld Fae territory, but at least that means there's on particular emotion tied to him outright saying, "Tell me what it does first."

He and Strange may have made the best amends they could manage back at the Summer Court but that's hardly fixed everything. Strange is still a magician of mad habits and Childermass is not about to handle anything he's enchanted without some assurances.