Source: Epic Level Handbook
Choose one type of weapon, such as greataxe. You deal extraordinary damage wielding this weapon.
Prerequisite: Epic Weapon Focus, Weapon Focus, Weapon Specialization (all in the weapon to be chosen)
Benefit: Add +4 to all damage you deal using the selected weapon. If the weapon is a ranged weapon, the damage bonus only applies if the target is within 30 feet.
Special: You can gain this feat multiple times. Its effects do not stack. Each time you take the feat, it applies to a different type of weapon.