It takes about an hour for the four additional people to get ready for departure. Two Healers show up, a young man and older woman, and Narva the mage. All of them are carrying travel bags which are substantially less than their body weight. 

Then they just need to all hold hands in a circle and he can transport them. He can explain (to Mindspeakers at least) that they will appear, probably on land, somewhere within five hundred miles of their destination and then Leareth will have to Gate them the rest of the way.

Everyone but Narva is a Mindspeaker, and the others can relay to him. They shoulder their packs and hold hands. 

Does someone need to be carrying the boxes they want to bring along? 

Yep, or it can go in the extradimensional cargo bag, which might be better in case they get unlucky and land in the water.

Leareth would really prefer his records not end up unexpectedly in water! They all have book-preservation spells which should prevent water damage, but still. 

He can tuck them away in the Bag of Holding.

And then he can Plane Shift them. They're not being as paranoid on the way back; Plane Shift's error rate on their plane is well-studied and everywhere within five hundred miles of Sothis is at peace and on good terms with Osirion (except the Chelish coastline, barely within range, where they'd want to leave right away but would have to get spectacularly unlucky to be interfered with in departing.)

They land in some scrubland; the ocean is distantly visible in one direction.

Leareth doesn't recognize where they are or have an easy way of finding out, but he doesn't actually need to know in order to Gate. Though he does instantly extend his mage-sight and Thoughtsensing to their full range, by reflex, as he starts building a Gate threshold on thin air. Thirty seconds later, the Gate is up, the other end back in the winter palace. Leareth gestures for everyone else to go through ahead of him. 

And then they're back in the palace! It's pleasantly breezy, and smells like salt; there's a great view of the sandy beach. He heads off to tell Hagan they're back.

Leareth shows the new arrivals around, points them to guest rooms where they can drop off their things, and gets their assistance carrying records back to his own room. The artifacts and books on magic can go to the work area where he's been meeting with the researchers. 

The researchers are incredibly excited about Healing and about having more research help in general. They explain pharaoh-meeting policies for everyone who might encounter the pharaoh and split into groups to ask lots more questions.

The Valdemaran Healers are so delighted to learn about an entire different kind of magic and contribute their own knowledge. Both of their packing was at least half books by weight. They want to watch all the different kinds of Healing-related spells with their Sight and describe what they see going on, and then share all the things they can do with Healing, from the very basic and easy-to-learn techniques to the extremely rare high-skill ones that require many years of specialized practice. 

Divine magic is spectacularly good at injuries (they can demonstrate) and can even with more advanced spells regrow limbs (they can demonstrate that too if the Healers really want but it'd be a bit more inconvenient) and raise the dead (the Healers can watch next time that's scheduled to happen.) The Pharaoh's personal guard are all people who died in the service of Osirion and were personally selected by him for resurrection.

Divine magic can treat illnesses, but only kind of blindly. For this reason they know less than Healers about how illness works and would like to learn more. And there are lots of slow bodily illnesses it cannot treat at all, though many of them can be indefinitely held at bay with enough healing.

The Valdemaran Healers are astonished at the injury-healing - they can address that type of problem, of course, but it's slow and energy-intensive for both the Healer and patient, and patients who've sustained very severe injuries often don't make a complete recovery.

Their explanation of Valdemaran Healing is that it can only make the body do things that it would in theory be capable of anyway, the natural healing processes. It can boost the speed a lot, though, healing a wound in minutes rather than days, knitting a broken bone in days rather than months. More advanced Healing usually means doing this more precisely or selectively; a skilled Healer can coax a patient's bone marrow into producing more new blood, for example, without affecting anything else. There are some Healers who can regrow nerves, even a damaged spinal cord, which is something that usually wouldn't happen ever, though at a very small scale the processes it involves are natural ones.

The main advantage that Healers have for diseases is diagnosis; they can directly see what's wrong, where, at least with good training on how to interpret their Sight. For something like pneumonia, they can boost the body to repair damage and bring more resources to fight the infection. Some illnesses are still very hard to treat; cancers that have spread widely in the body, for example, are intractable for most Healers. Some rare diseases aren't really understood at all. 

There seems like tons here that can be productively collaborated on, and everyone will be delighted to get to work on that.

Hagan swaps off Vanyel-sitting duty with Fazil so he can go into the city and talk to his contact from Rahadoum. 

Vanyel is vaguely aware that Things are happening and probably some of them are important. It's very hard to think about anything related to the Heraldic Circle, because it makes him think of Yfandes and then instinctively reach for her and smash into the metaphorical ice-wall in his head where she's blocked their bond. He's still not sleeping very restfully (taking strong painkillers to sleep seems to have gone poorly, so he hasn't done it again), and he's exhausted enough that he sometimes forgets what a conversation is about mid-sentence.

He should ask, though. "Is there any news about Valdemar?" 

"No. We don't have a good way to contact them, unless you think it's advisable for us to try to visit. Leareth went and grabbed some of his people, but we didn't stop in Valdemar. I guess unless the Plane Shift landed us there, but we were invisible, in midair, and only there for a minute before we Teleported to our destination."

Vanyel takes a while to process that. Thinking is hard. 

"I...don't think it's a good idea for you to visit," he says finally. "If you go without me it'll - they'll assume it's hostile and it'll be really hard to convince them otherwise. And if I go, um, like this, that's going to make it even worse." Sigh. He's silent for a while again, trying to eke out a few more focused thoughts. 

"I - don't know how bad it is to wait, though. I don't think they would escalate to crossing the northern border. They'll be redeploying people. Might be - a problem - given the situation in Karse. But - probably another few days won't make it worse." 

Nod. "If you would like us to go even though they will probably throw us in prison and do a lot of unpleasant interrogations about it, that would be all right with us. If you just think it won't help then we can also just wait and hope something changes here."

"...I guess it'd convince them there was really another world? I don't think they would be convinced about Leareth helping us, though, that'd just make them even more suspicious. They - don't have context at all. I didn't tell anyone about the dream conversations. Literally all they know is that he's a mage in the north who I'm destined to fight when he invades." Shrug. "I think it'd make things messier. I don't know if it'd be better or worse than it is now. It sounds exhausting though." 

"It would be pretty inconvenient. Do you think you're up for checking in the crystal ball again to see how bad things are and whether we can afford to wait a week for a better solution?"

The fact that the question nearly makes him burst into tears does not seem like a great sign. "Um. Maybe. I can try." 

"Maybe in a couple of days, it doesn't have to be right now."

Vanyel wants to say that he can do it now but it's starting to feel like, in fact, he definitely cannot do it now. "All right. If you think so." 

"I think you should not do it today and if you think there might be decision-relevant things to do today then one of us can do it."