Type: General, Fighter
Source: Player's Handbook
Choose one type of weapon, such as greataxe, for which you have already selected Weapon Specialization. You can also choose unarmed strike or grapple as your weapon for purposes of this feat. You deal extra damage when using this weapon.
Prerequisite: Proficiency with selected weapon, Greater Weapon Focus with selected weapon, Weapon Focus with selected weapon, Weapon Specialization with selected weapon, fighter level 12th.
Benefit: You gain a +2 bonus on all damage rolls you make using the selected weapon. This bonus stacks with other bonuses on damage rolls, including the one from Weapon Specialization.
Special: You can gain Greater Weapon Specialization multiple times. Its effects do not stack. Each time you take the feat, it applies to a new type of weapon.