Benefit: Choose a damage type your breath weapon doesn't already have from among acid, cold, fire, lightning, or poison. When you use your dragon breath racial power, you choose which damage type applies to the attack. Only one damage type applies for a given dragon breath attack.
Special: You can take this feat more than once. Each time you select this feat, choose another damage type for your dragon breath power that you don’t already have for it.[Dr365:28]