The Secret Lives of Heroes
You have a deep hatred for one Allegiance or group.
Prerequisite: Chosen Enemy (same group), Base Attack Bonus 9+
Effect: When you are combating your antithesis, you gain and additional +2 to hit and skill checks. You will not willingly deal with your antithesis on friendly terms, and when you must deal with forces friendly to them, you are –4 on all Charisma based skill checks.
Special: You may only take this feat once.