Learned Weapon Specialization (3.5e Feat)

Axe: As a full-attack action you may make a single attack as a touch attack, for this attack the weapon critical threat is doubled (stack with improved critical or keen).

Bow/Crossbow: Whenever you make an attack granted by base attack bonus, you may target two square containing a different creature within your range instead of one. You roll one attack roll for each square, if one attack roll miss but you still hit with the other the attack is a hit against the creature in that square. If both attack would hit you choose which creature receive the attack.

Club/Hammer/Flails/Mace: As a standard action you may make a single attack as a touch attack, if it hit it deal damage as normal. Additionally all of your attack next round against the struck opponent ignore hald of that creature armor bonus, natural armor bonus or shield bonus to AC and deal additional damage equal to half your base attack bonus.

Dagger/Knife: The first successful attacks in a round against a creature denied it dexterity bonus to AC is a critical threat.

Halberd/Polearm/Spear: You can set your weapon against a charge as an immediate action. You add your half base attack bonus to damage on attacks of opportunities.

Sword: You may make an additional attack as a swift action at no penalty, if this attack hit however it only deal half damage.

Whip: Any creature struck by at least a single of your whip attack must make a reflex save (DC 10 + half your character level + your dexterity modifier) or become cramped until the beginning of their next turn.