I guess it's more accurate to say he has a nightmare, singular, lmao.

Wow, a lovely resort with armed guards and gold gilted furniture all for magic users! Oh, hi there Held.

I thought he should be asking others what sort of nightmares they've been having. Then he'll know which mindscapes are safer.

Oh joy can't wait to see their new prison camp / home!

Soooo.... Noah got asleep after talking to Ciel or was he dreaming in the previous conversation ?

Maybe The Hallowman impersonating Ciel for a sinister reason ?

Or is the author playing ambigous to have (another) mistery box ?

Who knows !