The ideal candidate for a soul-graft depends on arcane magical properties, but that is no reason not to also expect some more... mundane similarities.
This fissure is fairly linear and doesn't afford much in the way of quiet corners. Also, he can hear voices up ahead.
Some cautious creeping reveals two more people who fell down (or are pretending that), one of them pinned under a rock.
Ugh. The smart thing to do would be to hide from them and hope not to be bothered, but whether these are fellow survivors from Kenabres or demons in disguise, there really isn't much room to hide in!
There might be room deeper into the fissure, but he'll need to get past them first.
"Hello," he says, stepping out into the light where they can see him, "do you need help?"
With Gord and Seelah working together, the rock is easy to remove.
"I don't have any spells or channels left. If we wait until tomorrow morning I'll be able to heal your leg."
It's very reasonable of him to have used up all his spells and channels fighting off the demons before falling down! If Seelah had any channels she probably also would have used them before falling down!
"I'm Seelah, a paladin of Iomedae, and this is Anevia."
"We can't climb back up, especially with Anevia's leg. Let's move forward; there may be another exit back to the surface, or more survivors who might need our help."
Anevia is much less trusting of mysterious strangers than Seelah, and is prevented from bringing this up by the fact that her audience consists of Seelah and the mysterious stranger himself.
"I can walk, with help, and I can still shoot things. While standing still."
He'd take point, except that he doesn't trust a paladin not to sword him in the back the moment she remembers to check whether he's evil.
"I'm also injured from the fall. I'll help Anevia walk, and if we get into a fight I'll come up front to help you."
He also has a potion of cure light wounds in his bag, but he's not going to give it to a stranger when he's likely to need it himself before the day is out; that fall did, in fact, take a lot out of him.
A little further down the fissure they come upon another pair of people who fell down from the city, except that this time one of them is dead and the other is standing over him in a... suggestive pose. What exactly it suggests may be up to one's priors, though.
When she notices them she brings up her rapier threateningly. "Who's there?!"
"Relax, friend! I'm a paladin." (Seelah firmly believes that this should only ever make people less wary of her, at least if they're the right kind of people.)
The girl relaxes. "I'm Camellia. I fell down when that... that..." Her voice falters for a moment. "When the demons attacked - how could that happen? And I found this poor man and tried to help him, but I fear I was too late..."
"What happened to him? He's mutilated. The fall couldn't have done that." But a rapier and a clever pair of hands could.
"Some monster probably found him, and ran off when I arrived. I think I saw a giant centipede earlier."
There's a familiar-looking locket around her neck.
"Did you by any chance arrive in the city this morning with a mysterious wound and missing some memories?"
"We're looking for a way out. Would you like to join us? It's safer to stick together."
Camellia agrees, and if she trusts some members of the impromptu party less than others she's better trained than to let that show on her face.
Gord keeps supporting Anevia. When they're accosted by the aforementioned giant centipedes, though, it rapidly becomes clear he's much stronger than the rest of the group (unless they're sandbagging) and he reluctantly takes point.
Camellia turns out to be another divine caster (though she also claims not to have any healing), which means he doesn't know what she can do, and so Gord isn't very happy about having these people at his back, but not to the point where he'd risk one of them being killed by a lucky bite from a centipede or a spider. Hopefully they'll keep each other from stabbing him in the back.
Either they don't trust each other or they don't actually want to murder him, because they make it through the centipedes (not really a threat to Gord) and to the next pair of strangers.
(Why do they keep meeting people in pairs, Gord wonders idly.)
The fissure has since merged into a mix of haphazardly dug tunnels and what seem to be natural caverns, but when they hear voices and divert towards them they find a room built of well-shaped stone surrounded by columns and plinths. It's rather the worse for wear due to the recent earthquake, but otherwise it's clearly more - civilized than what one might expect to find deep under Kenabres.
(Camellia is duly surprised. Anevia is surprised, in the way that one is surprised by the sudden yet inevitable and long-foreseen betrayal of one's faithful friend, the official maps and histories of Kenabres. Seelah is too new to Kenabres to know she should be surprised. Gord is too experienced of an adventurer to be surprised by finding a secret dungeon deep under a city.)
"...to be somewhere around here! I'll turn over every heap of rubble if I have to until I find it."
"And what then? You can't touch it, none of us can!" The second voice is full of sibilants and anger and a burning drive to survive, in the face of the world and despite it, to live no matter what it takes.
Not that Gord can understand all that from a tone of voice. But something about it - speaks to him. He's heard a lot of voices like that, over the past five years.
"What will that prove? Bring it to the tribe when you cannot wield it? It is a useless symbol of Heaven rejecting us, not a reason to go on a suicide mission!"
Seelah decides that is the right moment to fail to be stealthy instead of listening to the potentially illuminating conversation. (Her armor may have played a role in making that decision.)
(Gord might be slightly biased against paladins and/or unnecessarily heavy armor.)