The Dragon's Gift [Klenxud]

For saving the life of the young and tortured purple dragon, you have been granted the gift of the purple dragon. In-between your horns, your scales have turned into a deep purple. You feel electricity coursing inside you, stronger and hotter than before. You gain access to the purple dragon breath weapon.  The charges for your breath weapon are SHARED, so you can only use one per short rest. (NOT applicable to your already existing breath weapon, just the purple dragon's gift.)