Forged Destiny [Book 6: Ch. 14]

When he fell, Cinder was behind him, crouched down with something new in her hands. I had a second to gasp before she thrust up, and the sword we'd found in Vacuo – Watts' sword – pierced through my armour, my chest, my ribcage and then then my skin again. It erupted from my back with a sickening squelch.

[...]

Forge…

Forge.

My hand, still clutched around Watts' sword in a death grip, tightened imperceptibly.

My cracked lips moved.

"S-Stoke… the Forge…"

Pale blue light flickered fitfully behind my eyes.

[...]

It was the sound which alerted her, a sound like steam pouring from a boiling pot. A hissing that heralded something far hotter than even her brightest flames burning on contact with naked air. Cinder turned, eyes growing wide as she watched the man – the boy – place one hand down onto the ground and push himself up onto one knee.

Steam poured from him. It obscured him. His skin shimmered and sweat ran down exposed flesh. The gaping wound in his chest, the one she had imposed, was gone. So, too, was the sword. In its place, an expanse of pulsing silver remained. Living metal.

—Forged Destiny [Book 6: Ch. 14]