Dragon Forged by Dan Michaelson

Firewater is sacred. Touched by the power of the dragons, those who consume it can become more like those ancient beings. Most become dragon forged, their bodies strengthened to help fight the dangerous creatures attacking the valley.

But firewater didn’t change Rob.

When invaders threaten to destroy his people, what Rob discovers may save all he cares about—and provide the key to forging his own power.