Draconic Combat Challenge

Heroic Tier
Prerequisite: Dragonborn, dragon breath racial power, fighter, Combat Challenge class feature
Benefit: When you hit with the attack granted by your Combat Challenge, you deal 3 extra damage of the same damage type as your dragon breath power. The extra damage increases to 4 at 11th level and 5 at 21st level.

Published in Player's Handbook Races: Dragonborn, page(s) 22.