This is a problem.
Actually it's several problems. First, someone just tried to kill them both—clumsily, but very deliberately. Why? He didn't recognize the person but they were Haighlei and there's only one group of Haighlei who knows exactly where to find their camp, so the people he scared off have to be involved in this somehow, but why would they send an assassin? To shut him up, for their priest friend's sake? So, second, they still know exactly where to find the camp, and if the first attempt didn't work they may very well make another. It's not safe here.
And third, he has only the vaguest idea what to do about someone who was hit in the head and may or may not be breathing, besides 'wait and hope' or 'get a Healer'.
There's nowhere safe to wait, and no Healers closer than White Gryphon.
Also, every time he thinks about Lionstar's injury or the people responsible, he starts gathering fire before he can stop himself. And it's hard to stop himself.
It would be stupid to nearly lose his friend to a surprise attack and then finish the job himself because he lacks the self-control to keep a lid on his Gifts. But being stupid won't actually stop it from happening. If he doesn't have that self-control, dwelling on the bitter irony of the situation won't give it to him. He needs to actually not lose hold of his fire.
But all his hard-earned lessons on controlling his Gifts bring back memories of Lionstar teaching them to him, and then the same problem comes around again.
So. Fine. It's not safe to stay here, so they need to be somewhere else. And it's not safe for Sakshemar to spend much time near Lionstar until he can go two minutes without nearly starting a forest fire, so he needs to find somewhere safe-ish to leave Lionstar while he—does—something. Calms down? Finds the rest of that cursed expedition and kills them all? Both? Leave it, not important, he can figure it out when he gets there. First things first.
He takes apart their camp, packs away all their things, takes extra care to make sure Lionstar's notes are safe and sound. He crushes the charred bones of the person he killed and buries them with the ashes of the campfire.
He sits down and leans against the rock and closes his eyes and stretches his empathic senses out as far as they've ever gone. Is there anyone in range? Maybe—if he reaches even farther—a hint of something, a whisper, a vague feeling—
It might be nothing, but it's a direction to start looking in. It's not safe to sleep here, so he has to move. Has to find somewhere to leave Lionstar where he'll have a chance of making it through the night even if the forest burns down around him, and then... and then... something. Find the Haighlei expedition. Ask them what the fuck they were thinking, maybe.
He gets up. He picks up his friend, as carefully as he can. Walking through the forest in the dark carrying an injured man is stupid, but not as stupid as going to sleep in an unguarded camp that was just attacked by assassins, so move.
What he finds, after a lot of walking, is a cave. The cave has a bear in it. Then there is fire, and the bear is no longer in a state to object to company. He sets Lionstar down, carefully, with all their things, and as the sun is just beginning to peek over the horizon he leaves it all behind and heads back out into the forest, keeping his empathy open, muttering under his breath in Haighlei.
Don't burn down the forest. Fire crackles in his wake. Don't burn down the forest. It would be so easy to let this rage loose, let it scour the path ahead, descend on them like the wrath of the gods. Don't burn down the forest. He doesn't even know for sure that they sent the assassin. It could be a coincidence. Don't burn down the forest. He really doesn't think it's a coincidence. Don't burn down the forest. The minds on the edge of his range are getting clearer now, and he's pretty sure he recognizes them.
"Don't burn down the fucking forest, idiot," he says through gritted teeth.
A cluster of leaves hanging in his path bursts into flame and crumbles to ash.
He stops walking. He can't see them through the trees, but he can hear the water, distantly; they're in their boat, on the shore. Some of them are still asleep. Five, including the two he recognizes.
If he were a good person, if he were the person Lionstar thinks he is, maybe he would go talk to them. Maybe he'd pretend this was about justice. Lawkeeper, what do you bring to the court? Except that one of them is a priest, and priests are outside even his theoretical jurisdiction. He should remember to tell Lionstar—
Another blast of flame narrowly misses a tree in front of him, and he curses.
Well. He's not a good person. And this isn't about anything but finding somewhere to put his rage before it kills him and Lionstar both. That and, maybe, if he's generous with himself, the pragmatic necessity of making sure no one with the means and motive to kill them remains alive to try it.
He reaches out with his empathy. The more of himself he puts into that Gift, the less there is to fuel the fire. The picture of their little group becomes clearer and clearer in his mind. Three people dreaming, and the priest and a stranger on watch. The priest is troubled; the stranger is trying to cheer him up. He has no idea, looking at them, whether they sent that murderer on purpose. He does think the attacker was one of theirs, though; the priest's worries have the flavour of missing an absent friend who should be back by now.
His anger flares, and he pushes it into empathy instead of fire—and that means projecting it, and now the pair of them are both furious, and it's incredibly, unexpectedly satisfying to shove his grief and anger into them and make them want the world to burn as much as he does—and to feel their pain when they turn on each other in blind fury—and the three dreamers wake up to a storm of emotion, and now all of them are ripping each other apart, he can't see it but he can feel what they're feeling and good, he wants them to hurt, wants them to be the instruments of his rage, destroying each other for him while he watches.
It's a while before there are no minds left on the boat.
He takes a deep breath, and steps away from the tree he was leaning on, and staggers; pushing his empathy that hard at that kind of range took more out of him than he would've expected if he'd stopped to think about it. But he can think about Lionstar now without anything catching fire in his vicinity, and that's the important thing here. He trudges back to the bear cave, dizzy and exhausted, forcing himself to keep moving so at least when he collapses he'll be between his friend and danger.
When he finally makes it back, he's just about capable of verifying that Lionstar is still breathing before he curls up on the cave floor and falls instantly asleep.