"There is," he says to the demon, "a way to travel between worlds without being summoned. I will trade you the knowledge of how to make it for three of them and some help identifying a habitable planet in our new dimension."
"...oh, gosh," says the demon. "How big are they? What kinda help?"
He gestures. They'll fit in this ship. "They take you to a completely arbitrary location in the new dimension, so you're almost guaranteed to land in vacuum. Then we'll need someone to conjure for Earthlike worlds and help us get coordinates for one so that we can lightleap to it."
"Okay, I like this whole being allowed to talk thing so I'm gonna help you out, technically you said help identifying planets not help getting there," the demon says. "If I'd gone uh-huh to that I wouldn't've had to make you a lightleaper too."
And they don't actually need a lightleaper but he's not going to tell her about the teleport. "Okay. I will trade you information about how to travel between dimensions for three of the devices used to do that and then help identifying and travelling to an inhabited planet in a new dimension, is that a deal?"
"You got it," the demon chirps, and she makes three worldleapers.
"Thank you!" And to Issiak, do you have someone in an escape pod to jump for us or should we have someone jump with her, ask her to make air when they land?
It seems less likely to reveal more than we mean to in the latter case.
Agreed. "All right, want to jump dimensions with me? I'll need air where we land."
"Sure," says the demon, "how do you do it?"
The worldleaper detaches; an anchor and a jump component that has a simple activation switch. The current models require you to enter an activation code, but the very first prototypes didn't and that's what they have.
Air is supplied.
Second worldleaper to take them one more dimension out.
Air is again supplied.
"Thanks so much! Okay, you probably know better than I do how to conjure for habitable planets."
"I've never actually done a search like that before... I'll figure something out."
A lot of fist-sized balls of rock later she's got one.
"Thank you so much!. The latest lightleapers have pretty cool targeting, if you can just make me one in the 22 series I can go find the planet myself."
"Sure thing." A model 22 appears around them.
"That's all we needed; you happy to go home?"
"You could maybe make it a little easier to find documentation on the leapy things?"
"For sure. They're called worldleapers, Fëanáro Curufinwë invented them in Year of the Peace 7, the blueprints are all chiplocked but prototypes you should be able to grab."
"My pleasure." He sends her home. He teleports to the new planet and verifies that the air is breathable and the gravity tolerable. He parks the lightleaper in space somewhere in the intervening dimension so people can teleport through it without a ship. He bounces back to Issiak. "Got one, two-off from here, taking the ship there now, someone should check whether it's not by sheer bad luck neighbors to a discovered dimension. How long does Yeerk reproduction take?"
"New Yeerks are full size in under a year and can take hosts in half that time if there's a reason, though they won't have as consistent a hold on the host. Why?"
"We need demons, we can't infest them, people who are conceived adjacent to the daeva worlds will be daeva when they die."
"Conceived is not really the - but all right, we can get together a cluster in a world adjacent to the daeva worlds."