“Do it now, then. Tell me what metal I’m burning.”

Vin closed her eyes, flaring bronze, listening…feeling, as Marsh had taught her. She remembered her solitary trainings, time spent focusing on the waves Breeze, Ham, or Spook gave off for her. She tried to pick out the fuzzing rhythm of Allomancy. Tried to…

For a moment, she thought she felt something. Something very strange—a slow pulsing, like a distant drum, unlike any Allomantic rhythm she’d felt before. But it wasn’t coming from Kelsier. It was distant…far away. She focused harder, trying to pick out the direction it was coming from.

But suddenly, as she focused harder, something else drew her attention. A more familiar rhythm, coming from Kelsier. It was faint, difficult to feel over the pulsing of her own heartbeat. It was a bold beat, and quick.

She opened her eyes. “Pewter! You’re burning pewter.”

Kelsier blinked in surprise. “Impossible,” he whispered. “Again!”

She closed her eyes. “Tin,” she said after a moment. “Now steel—you changed as soon as I spoke.”

“Bloody hell!”

“I was right,” Vin said eagerly. “You can feel Allomantic pulses through copper! They’re quiet, but I guess you just have to focus hard enough to—”

“Vin,” Kelsier interrupted. “Don’t you think Allomancers have tried this before? You don’t think that after a thousand years’ time, someone would have noticed that you could pierce a coppercloud? I’ve even tried it. I focused for hours on my Master, trying to sense something through his coppercloud.”