He is not actually capable of enjoying the fanciness, but he can at least thank his hosts. Would they mind if he tried to sleep now? Is the list of books ready?

It is, and they don't mind at all. They give him a list and politely withdraw.

In that case Felix is going straight to bed and try to sleep.
...he cries, not a lot, but the problem with trying to sleep is that it makes harder for your mind to ignore certain things. Eventually he manages to drift away-
 
He can dreamshape! That is a relief. He metaphorically feels around with his power. He can't extend his dreamshaping to affect his home universe, but he can still copy things from there and he can't use the pocket dimension to bridge both worlds. He can copy things from Amenta, including amentans themselves, not that he decides to exercise that option. He can-
 
-there is a pocket dimension! It feels small and spherical just like it was new. It might be a few hours old? But how? He has no idea, but it is probably related to how he got here in the first place. And there is likely a dreamshaper out there and if it works like normal dreamshaping.
 
He almost forces himself awake, but instead decides to gather more information and resources.
 
He maps the other pocket dimension and creates portals connecting his own dimension to it. He triangulates where the center is and it’s relation to the city. He can’t just use “dreamshaper” as a search parameter but he can use “people sleeping in this area” and this way he can easily get any digital information and pictures. All of that goes into a specific room inside his new house. He lets his pocket dimension design the place otherwise. There is a library with the suggested reading list and assorted books from both worlds.
 
His dimension keeps pushing for him to make people, he ignores it. He creates a portal right next to his bed and one next to his floating rock.

Felix wakes up and draws a small circle of fire - this portal's opening Key - and it works. He calls the blues.

They arrive promptly.

There is a portal behind him, showing some sort of terrace space.

"My dreamshaping works. Also, I think you have another dreamshaper in your world."

"...what are the implications of that?"

Felix makes a helpless gesture. "This entire day is unprecedented. I want to check on it right away while the dimension is not too big."

"That sounds wise!"

Nod. "It isn't necessarily dangerous, but I should be the first one to check on account of being immortal. I am going to keep this portal open so you have access. If I die it counts as being asleep and I will be able to generate informative radio signals and you will be able to try do something about it if you so choose. You won't be able to communicate with me. Any questions?"

"- how likely are you to die? How should we be set up to receive informative radio signals?"

"I wouldn't say it is very likely, most pocket dimensions aren't dangerous like that. But the risk isn't none and I can recover from anything. And I should be able to create a version of a local device that receives the signals and drop it off near this portal via drone."

"All right. When should we expect to hear from you?"

"No idea. If all goes well it shouldn't take an hour. I can kill this body trivially so it's harder for me to stay stuck."

"All right. What are likely results of your investigation?"

"My goal here is to rescue that dimension's dreamshaper- uh, part of the process of becoming one means that your body stays asleep unless your... projected self finds a way out through a portal. The faster I do that, the easier it will be. It would be worth keeping an eye out for people that won't wake up without any medical reason."

"Do you know how this could have happened?"

"I don't know! I got dreamshaping because someone forcedly used a magical-"

"Oh, shit. Oh, shit."

He turns around and bolts through the portal.

He is not sure if this was caused by someone using the dreamshard. But he definitely can't give these people this level of trust.

She blinks confusedly.

Yeah, Felix is not there to see that. He flew through the portal and is now inside his own dimension bolting through the house until he finds the tablet with the information.

Okay, so what area the pocket dimension covers? Who are the people sleeping near its center?

The pocket dimension looks to cover a substantial section of downtown - four or five blocks in each direction. At its center are some low-rise apartment buildings, looks like, with lots of people sleeping.

...At least the center doesn't have as many people. He pretty sure he placed a portal pretty close to the centermost block. What do the people look like? Maybe it's a caste-specific neighborhood?

He takes flight again, but with the tablet on hand. Should he try finding the dreamshaper body first? He should at least take look around their surrounds first...

 They're pretty shabby low-rise apartments. He can access government IDs.

They are all red caste, looks like.

...Okay. Felix is undeterred, once things are sorted out he will happily decontaminate, pay fines or even make himself a new body if that is what it takes. If there is a dreamshard here then it's a priority to retrieve it.

Still, he is not going to break in someone's home and take it. He will save the dreamshaper first.

There isn't much of a point delaying it. He opens the portal between his dimension and the new one. What is on the other side?

It's a muddy flat with slow-moving rivers carving squiggles in the sand.