How about a half draconic feat?
Draconic Ancestor (Ancestor)
Back in your family line, someone was a full blooded dragon.
Prerequisite: You may not take any other ancestor feat.
Benefit:Gain the following benefits:
- Gain a +1 to strength.
- Gain a +1 to charisma.
- Choose a dragon type, once per day you may use dragon breath following the rules for a dragonborn.