How about a half-drow ancestor feat?
Drow Ancestor (Ancestor)
Back in your family line, someone was a full blooded drow.
Prerequisite: You may not take any other ancestor feat.
Benefit:Gain the following benefits:
- Gain a +1 to dexterity.
- Gain a +1 to charisma.
- You are Lolth-touched. You gain access to the faerie fire and darkness spells as the drow race. You do not gain the dancing lights cantrip.