Knight in Shining Armor (3.5e Feat)
From D&D Wiki
 Knight in Shining Armor [Archetype]
You are the rescuer of damsels in distress, the emancipater of maidens locked in high towers. You ride proudly upon your mount, displaying your righteous do-gooder ways to the population...and they love you for it!
Benefit: See below
Special: If you ever stop qualifying for this feat, you can trade it for another archetype feat that you meet the prerequisites of.
Archetype Feat Bonuses are based on HD.
- 1 HD: Whilst wearing a breastplate, Half plate or full plate armor, you gain a +4 circumstance bonus to all Charisma-related checks.
- 3 HD: You gain the ability to fascinate creatures with your devilish good looks as if you were a Bard with levels equal to your Hit Dice. You act as if you had maximum ranks in one Perform skill. You gain uses of this ability equal to your Charisma modifier/day.
- 8 HD: For the purposes of determining the strength of your cohort granted by the Leadership feat you gain a +2 to your leadership score.
- 15 HD: Any time you are targeted by a command spell or any similar Compulsion effect you may make an opposed Charisma check against the caster and have the effect turn upon the caster - who acts as if the spell was cast upon him or herself by themselves and must make the relevant Saving Throws to avoid being controlled by the very person they were attempting to control...