Why had the Parshendi wanted gemstones?

To the Alethi, gemstones were not merely wealth, but power. With a Soulcaster, emeralds meant food—highly portable sources of nutrition that could travel with an army. The Alethi military had used the advantage of mobile forces without long supply lines to ravage across Roshar during the reigns of a half dozen interchangeable kings.

The Parshendi hadn’t possessed Soulcasters though. Rlain had confirmed this fact. And then he’d given humankind a gift.

Kaladin walked down a set of stone steps to where a group of farmers worked a test field. The flat stone had been spread with seed paste—and that had grown rockbuds. Water was brought from a nearby pump, and Kaladin passed bearers lugging bucket after bucket to dump on the polyps and simulate a rainstorm.

Their best farmers had explained it wouldn’t work. You could simulate the highstorm minerals the plants needed to form shells, but the cold air would stifle growth. Rlain had agreed this was true … unless you had an edge.

Unless you grew the plants by the light of gemstones.

The common field before Kaladin was adorned with a most uncommon sight: enormous emeralds harvested from the hearts of chasmfiends, ensconced within short iron lampposts that were in turn bolted to the stone ground. The emeralds were so large, and so full of Stormlight, that looking at one left spots on Kaladin’s vision, though it was in full daylight.

Beside each lantern sat an ardent with a drum, softly banging a specific rhythm. This was the secret. People would have noticed if gemstone light made plants grow—but the mixture of the light and the music changed something. Lifespren—little green motes that bobbed in the air—spun around the drummers. The spren glowed brighter than usual, as if the Light of the gemstones was infusing them. And they’d move off to the plants, spinning around them.

This drained the Light, like using a fabrial did. Indeed, the gemstones would periodically crack, as also happened to fabrials. Somehow, the mixture of spren, music, and Light created a kind of organic machine that sustained plants via Stormlight.

Rlain, wearing his Bridge Four uniform, walked among the stations, checking the rhythms for accuracy. He usually wore warform these days, though he’d confessed to Kaladin that he disliked how it made him seem more like the invaders, with their wicked carapace armor. That made some humans distrust him. But workform made people treat him like a parshman. He hated that even more.

Though to be honest, it was odd to see Rlain—with his black and red marbled skin—giving direction to Alethi. It was reminiscent of what was happening in Alethkar, with the invasion. Rlain didn’t like it when people made those kinds of comparisons, and Kaladin tried not to think that way.

Regardless, Rlain seemed to have found purpose in this work. Enough purpose that Kaladin almost left him and continued on his previous task. But no—the days where Kaladin could directly look out for the men and women of Bridge Four were coming to an end. He wanted to see them cared for.

He jogged through the field. While any one of these head-size rockbuds would have been considered too small to be worth much in Hearthstone, they were at least big enough that there would be grain inside. The technique was helping.

“Rlain,” Kaladin called. “Rlain!”

“Sir?” the listener asked, turning and smiling. He hummed a peppy tune as he jogged over. “How was the meeting?”

Kaladin hesitated. Should he say it? Or wait? “It had some interesting developments. Promotions for Skar and Sigzil.” Kaladin scanned the field. “But someone can fill you in on that later. For now, these crops are looking good.”

“The spren don’t come as readily for humans as they did for the listeners,” he said, surveying the field. “You cannot hear the rhythms. And I can’t get humans to sing the pure tones of Roshar. A few are getting closer though. I’m encouraged.” He shook his head. “Anyway, what was it you wanted, sir?”

“I found you an honorspren.”

Kaladin was accustomed to seeing an unreadable, stoic expression on Rlain’s marbled face. That melted away like sand before a storm as Rlain adopted a wide, face-splitting grin. He grabbed Kaladin by the shoulders, his eyes dancing—and when he hummed, the exultant rhythm to it almost made Kaladin feel he could sense something beyond. A sound as bombastic as sunlight, as joyful as a child’s laughter.

“An honorspren?” Rlain said. “Who is willing to bond with a listener? Truly?”

“Vratim’s old spren, Yunfah. He was delaying choosing someone new, so Syl and I gave him an ultimatum: Choose you or leave. This morning, he came to me and agreed to try to bond with you.”

Rlain’s humming softened.

“It was a gamble,” Kaladin said. “Since I didn’t want to drive him away. But we finally got him to agree. He’ll keep his word; but be careful. I get the sense he’ll take any chance he can to wiggle out of the deal.”

Rlain squeezed Kaladin on the shoulder and nodded to him, a sign of obvious respect. Which made the next words he spoke so odd. “Thank you, sir. Please tell the spren he can seek elsewhere. I won’t be requiring his bond.”

He let go, but Kaladin caught his arm.

“Rlain?” Kaladin said. “What are you saying? Syl and I worked hard to find you a spren.”

“I appreciate that, sir.”

“I know you feel left out. I know how hard it is to see the others fly while you walk. This is your chance.”

“Would you take a spren who was forced into the deal, Kaladin?” Rlain asked.

“Considering the circumstances, I’d take what I could get.”

“The circumstances…” Rlain said, holding up his hand, inspecting the pattern of his skin. “Did I ever tell you, sir, how I ended up in a bridge crew?”

Kaladin shook his head slowly.

“I answered a question,” Rlain said. “My owner was a mid-dahn lighteyes—nobody you’d know. An overseer among Sadeas’s quartermasters. He called out to his wife for help as he was trying to add figures in his head, and—not thinking—I gave him the answer.” Rlain hummed a soft rhythm, mocking in tone. “A stupid mistake. I’d been embedded among the Alethi for years, but I grew careless.

“Over the next few days, my owner watched me. I thought I’d given myself away. But no … he didn’t suspect I was a spy. He just thought I was too smart. A clever parshman frightened him. So he offered me up to the bridge crews.” Rlain glanced back at Kaladin. “Wouldn’t want a parshman like that breeding, now would we? Who knows what kind of trouble they would make if they started thinking for themselves?”

“I’m not trying to tell you that you shouldn’t think, Rlain,” Kaladin said. “I’m trying to help.”

“I know you are, sir. But I have no interest in taking ‘what I can get.’ And I don’t think you should force a spren into a bond. It will make for a bad precedent, sir.” He hummed a different rhythm. “You all name me a squire, but I can’t draw Stormlight like the rest. There’s a wedge between me and the Stormfather, I think. Strange. I expected prejudice from humans, but not from him.… Anyway, I will wait for a spren who will bond me for who I am—and the honor I represent.” He gave Kaladin a Bridge Four salute, tapping his wrists together, then turned to continue teaching songs to farmers.