Darkling- Amplified age

Then he sighed and said, “One hundred and twenty. Give or take.”

“What?” I squeaked. The soldiers sitting across from me glanced over. “That’s impossible,” I said more quietly.

He looked into the flames. “When a fire burns, it uses up the wood. It devours it, leaving only ash. Grisha power doesn’t work that way.”

“How does it work?”

“Using our power makes us stronger. It feeds us instead of consuming us. Most Grisha live long lives.”

“But not one hundred and twenty years.”

“No,” he admitted. “The length of a Grisha’s life is proportional to his or her power. The greater the power, the longer the life. And when that power is amplified …” He trailed off with a shrug.

“And you’re a living amplifier. Like Ivan’s bear.”

The hint of a smile tugged at the corner of his mouth. “Like Ivan’s bear.”

An unpleasant thought occurred to me. “But that means—”

“That my bones or a few of my teeth would make another Grisha very powerful.”

“Well, that’s completely creepy. Doesn’t that worry you a little bit?”

“No,” he said simply.

Shadow and Bone Chapter 5