See? It was a friendly spine-snake blood horse all along.

Oh, so we started on the wrong foot then.

Noah's contribution to the whole matter is once again stellar. I wonder how much Ciel is recording of all this.

I see no way for Chernyl to survive the fallout of this horrowshow unless a third party rescues her from the empire. It doesn't matter how powerful she is, she's just too great a liability.
Unless the juice Noah gets from entering her mind is good enough to power a wish to actually turn back time, people will be out for blood.

I would imagine neither of the two options is good for a nightmare, what's their plan here?

Such a good design for the monster. I'm eager to see the halloman

The option "Chernyl learns to actually control her powers" could be good for both the nightmares and the main characters. That might be where this is headed.