Choose one type of one-handed slashing melee weapon, such as a scimitar or longsword for which you have already selected the Weapon Focus feat. You wield this weapon with an almost unnatural grace.     

Prerequisite: Weapon Finesse, Weapon Focus (any one-handed slashing weapon), base attack bonus +1

Benefit: If you wield your chosen weapon in one hand you treat your chosen weapon as a light weapon.
If you do not wield a shield or weapon in your off-hand, you also gain a +1 shield bonus to your AC while wielding your chosen weapon. When you are fighting defensively or using the total defense action, this shield bonus increases to +2.

Special: This is a combat feat. You may take this feat more than once. Each time you do, it applies to a new one-handed slashing weapon you have Weapon Focus in.