"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."
Taliar is not especially mopey. He does miss his husband, but he's not sure that Maitimo can't hear him, so it's not as bad as it could be. He'll be very glad to get back to him when he's flung his healing aura over all relevant planets, though.
He finishes flickering through all the stops between Nuime and Warp.
He goes in.
"Hi. Elaneth-imire Taliar, nice to meet you, please throw me at some planets."
"Thanks!"
Off he goes. Anyone within several astronomical units of a target planet will find themselves extremely healed.
It takes him an hour or so to get through them.
Then he returns to the hall outside T'Mir's office.
"I can go throw my healing aura at it and see if that helps. If not, my soul will probably branch something for it pretty quick."
He goes to Cube. He floods their Earth with warm golden light. He can't tell if it's working, so he leaves it on for a minute - another minute - he probably should've asked how and whether and how fast they can check if it's working -
All right, I'll keep it up.
He does that. The improvement accelerates. At this rate, it looks like it's going to be all done in fifteen minutes.
You're very welcome, and if they know about the multiverse I'd prefer to be personally credited but if they don't you can say whatever.
Well then, I suppose a powerful ally has just given you some stuff. And I think that's the last thing I can accomplish for you with just the powers I've got, so I guess I'll go home now, unless you've come up with another thing in the last fifteen minutes—?