Weapon Focus

Weapon Focus
Choose a single exotic weapon or weapon group. You are especially good at using these weapons. You can choose unarmed strike or grapple for your weapon for purposes of this feat.
Prerequsites: Proficient with selected exotic weapon or weapon group
Benefit: You gain a +1 bonus on all attack rolls you make using the selected exotic weapon or weapon group.
Normal:
Special: You can gain this feat multiple times. Its effects do not stack. Each time you take the feat, it applies to a new exotic weapon or weapon group.