Nothing ever comes out might be true for things born of this dream, but he's a visitor. If nothing else, that might let him be extricated, when all else fails.

He'd prefer to get himself out, of course. But there's nothing wrong with having a little bit of belief.

He waits a moment longer, and then steps into the seething darkness. He doesn't know exactly what he'll find there, in the depths of Rex's dreams, but he has a feeling he won't like it.