In my campaign, I have two feats, Secrets of the New Style, and Secrets of the Old Style.
Secrets of the New Style
You have trained in a modern, secretive sword technique.
Prerequisites: Jump 4+ ranks, Tumble 4+ ranks.
Benefit: You may perform a special lunge as part of an attack. Your reach extends an extra 5 ft., and you get a +2 bonus to your attack rolls, but you take a -2 penalty to AC for the next round, and you can only attack a single foe. You forfeit your attacks of opportunity for the round. You can use this feat both with single attacks and full attacks, but not attacks of opportunity.
When a foe uses this feat against you, he does not gain the +2 bonus to his attack rolls, since you know how to defend against it.
Secrets of the Old Style
You have trained in an ancient, secretive sword technique.
Prerequisites: Weapon Focus, Knowledge (history) 4 ranks.
Benefit: Choose a sword you have Weapon Focus in. You can use your Intelligence modifier to attack rolls instead of your Strength modifier when fighting with the chosen weapon. Additionally, you can qualify for Weapon Specialization and later feats in that chain as if you were a Fighter of your character level.
Dogbrain said:
Universal Parry (historically talked about in the 1700s and later)
This was purported to be a defense that could not be penetrated. Therefore, when someone with this feat makes no attacks at all in a round and wields an appropriate sword, he cannot be hit at all by any melee attack.
Prerequisites: I've had to much bourbon tonight to bother with that--somebody else can think them up.
Universal Parry
Your mastery of the art of defense can block any attack.
Prerequisites: Dex 13, Int 13, Combat Expertise, Combat Reflexes, Dodge, Greater Weapon Focus, Greater Weapon Specialization, Lightning Reflexes, Weapon Focus, Weapon Specialization, base attack bonus +20, Sense Motive 10 ranks.
Benefit: Whenever a melee or ranged attack would hit you, if you are armed with a melee weapon you have Greater Weapon Specialization in, you may expend an attack of opportunity for this round. If you do, the attack instead misses.
Universal Strike (historically talked about in the 1500s and 1600s)
This was purported to be a special "secret strike" that could not be defended against. Someone with this feat may, once per round, make a single attack that ignores all worn armor, all defenses that are negated by being flat-footed, and all bonuses to AC that come from worn armor.
Prerequisites--did I mention that it was barrel-strength bourbon I was sipping?
Universal Strike
You have perfected the attack, and your weapon will never again miss a mortal target.
Prerequisites: Dex 19, Int 13, Combat Expertise, Greater Weapon Focus, Greater Weapon Specialization, Improved Critical, Improved Feint, Improved Precise Shot, Point Blank Shot, Precise Shot, Weapon Focus, Weapon Specialization, base attack bonus +20, Bluff 10 ranks, Heal 10 ranks.
Benefit: When you make a melee attack with a weapon you have Greater Weapon Specialization in, the target is considered flat-footed, and you need only succeed a touch attack to hit. You can ignore any concealment or cover less than total.