"Wanna see the library and get sort of generally oriented?" he asks. "Oh, and maybe Joy's still there if you didn't get him back."

"Lift's this way, do you have lifts?" The lift is a tiny little room.

"We don't! What's a lift? Does it lift things?"

"And moves 'em in other directions. It's faster than stairs, and in this building, less badly enchanted - don't go in the stairs unless you have enough oomph to teleport somewhere that is not the stairs while disoriented in space." He shuts the door and says, "Library," and the lift moves.

"Noted. This seems really convenient. I wonder if I could figure out how to enchant something like it at home."

"They're mostly only worth it in larger buildings or sets of them like this campus. Really tall buildings often have ones that only go vertically."

"Buildings in Ponyville mostly aren't big enough to need them, but in places like Canterlot and Manehattan it's a different story."

The lift comes to a halt and the door opens on the library. It is a fair bit bigger than the Ponyville library.

"Oooooooh. It's much more impressive in person!"

"Isn't it just? How about you find Joy and I'll run up to my room and get some notes on some things?"

"Sure!"

Kaylo goes back into the lift and is carried away.

Blueberry finds Joy.

"The spell I've been using to try to get you has serious problems. I think I'm going to want to invent a whole new one that doesn't," she says. "It probably won't take much more than a week."

"Sure, that sounds fine. Did you know this world is a square? They've got maps and everything! It's pretty cool. What shape's ours? The maps I've seen mostly just show Equestria."

"It's a sphere. It's actually mostly water; at night the sun is still shining somewhere, but only on lots and lots of ocean. But because there's plenty of land and it's all bunched up close together, nopony bothers making maps that show all the rest."

"That makes sense, I guess." He goes back to the book he was reading.

Kaylo comes back with full to bursting binders flagged with various colors of sticky notes. "Hi again," he says. "Where do you want to start, Blueberry?"

"Well, figuring out interworld transport seems like the most immediately practical thing. Whether or not unicorn spells can override wizard spells, and how to make a better unicorn spell so I can go back and forth between the worlds by myself without accidentally dragging any other ponies along."

"Come to think of it, do you think you might have had trouble grabbing Joy because he's under a summon?"

"It's possible. But it's hard to tell, because the spell I used is so bad. It was originally supposed to be for moving large groups of ponies long distances - that's why it targets by species. I managed to get it narrowed down so it didn't try to grab all of the dragonlike creatures in the building, but now I think it would be a better idea to abandon it and invent one myself."

"Want to walk me through how you're going to do that?"

"Well... casting a spell depends on being familiar with what it's supposed to do. So I think I'm going to learn all about how wizardry does interworld transport first, and then figure out how I want my spell to do it, and see if I can make a spell that works how I want. I haven't done a lot of work in spell invention, so it might take a while."