Kelsier continued to walk, the spring in his step incongruent with the dark gloom.
“Shouldn’t we be worried about soldiers?” Vin asked quietly. Her crews always had to be careful of nighttime Garrison patrols.
Kelsier shook his head. “Even if we were careless enough to be spotted, no imperial patrol would dare bother Mistborn. They’d see our cloaks and pretend not to see us. Remember, nearly all Mistborn are members of the Great Houses—and the rest are from lesser Luthadel houses. Either way, they’re very important individuals.”
Vin frowned. “So, the guards just ignore the Mistborn?”
Kelsier shrugged. “It’s bad etiquette to acknowledge that the skulking rooftop figure you see is actually a very distinguished and proper high lord—or even high lady. Mistborn are so rare that houses can’t afford to apply gender prejudices to them.
“Anyway, most Mistborn live two lives—the life of the courtgoing aristocrat, and the life of the sneaking, spying Allomancer. Mistborn identities are closely guarded house secrets—rumors regarding who is Mistborn are always a focus of high noble gossip.”
Kelsier turned down another street, Vin following, still a bit nervous. She wasn’t certain where he was taking her; it was easy to get lost in the night. Perhaps he didn’t even have a destination, and was just accustoming her to the mists.
“All right,” Kelsier said, “let’s get you used to the basic metals. Can you feel your metal reserves?”
Vin paused. If she focused, she could distinguish eight sources of power within her—each one far larger, even, than her two had been on the day when Kelsier had tested her. She had been reticent to use her Luck much since then. She was coming to realize that she had been using a weapon she’d never really understood—a weapon that had accidentally drawn the attention of a Steel Inquisitor.
“Begin burning them, one at a time,” Kelsier said.
“Burning?”
“That’s what we call it when you activate an Allomantic ability,” Kelsier said. “You ‘burn’ the metal associated with that power. You’ll see what I mean. Start with the metals you don’t know about yet—we’ll work on Soothing and Raging emotions some other time.”
Vin nodded, pausing in the middle of the street. Tentatively, she reached out to one of the new sources of power. One of them was slightly familiar to her. Had she used it before without realizing it? What would it do?
Only one way to find out… Uncertain what, exactly, she was supposed to do, Vin gripped the source of power and tried to use it.
Immediately, she felt a flare of heat from within her chest. It wasn’t discomforting, but it was obvious and distinct. Along with the warmth came something else—a feeling of rejuvenation, and of power. She felt… more solid, somehow.
“What happened?” Kelsier asked.
“I feel different,” Vin said. She held up her hand, and it seemed as if the limb reacted just a bit too quickly. The muscles were eager. “My body is strange. I don’t feel tired anymore, and I feel alert.”
“Ah,” Kelsier said. “That’s pewter. It enhances your physical abilities, making you stronger, more able to resist fatigue and pain. You’ll react more quickly when you’re burning it, and your body will be tougher.”
Vin flexed experimentally. Her muscles didn’t seem any bigger, yet she could feel their strength. It wasn’t just in her muscles, however—it was everything about her. Her bones, her flesh, her skin. She reached out to her reserve, and could feel it shrinking.
“I’m running out,” she said.
Kelsier nodded. “Pewter burns relatively quickly. The vial I gave you was measured to contain about ten minutes’ worth of continuous burning—though it will go faster if you flare often and slower if you are careful about when you use it.”
“Flare?”
“You can burn your metals a little more powerfully if you try,” Kelsier said. “It makes them run out much faster, and it’s difficult to maintain, but it can give you an extra boost.”
Vin frowned, trying to do as he said. With a push of effort, she was able to stoke the flames within her chest, flaring the pewter.
It was like the inhaled breath before a daring leap. A sudden rush of strength and power. Her body grew tense with anticipation, and for just a moment she felt invincible. Then it passed, her body relaxing slowly.
Interesting, she thought, noting how quickly her pewter had burned during that brief moment.
“Now, there’s something you need to know about Allomantic metals,” Kelsier said as they strolled forward in the mists. “The more pure they are, the more effective they are. The vials we prepare contain absolutely pure metals, prepared and sold specifically for Allomancers.
“Alloys—like pewter—are even trickier, since the metal percentages have to be mixed just right, if you want maximum power. In fact, if you aren’t careful when you buy your metals, you could end up with the wrong alloy entirely.”
Vin frowned. “You mean, someone might scam me?”
“Not intentionally,” Kelsier said. “The thing is, most of the terms that people use—words like ‘brass,’ ‘pewter,’ and ‘bronze’—are really quite vague, when you get down to it. Pewter, for instance, is generally accepted as an alloy of tin mixed with lead, with perhaps some copper or silver, depending on the use and the circumstances. Allomancer’s pewter, however, is an alloy of ninety-one percent tin, nine percent lead. If you want maximum strength from your metal, you have to use those percentages.”