Sources: Player's Handbook
Epic Level Handbook
Masters of the Wild
Deities and Demigods
You are a master at fighting two-handed.
Prerequisite: Dex 19, Improved Two-Weapon Fighting, Two Weapon Fighting, base attack bonus +11
Benefit: You get a third attack with your off-hand weapon, albeit at a -10 penalty.
Special: An 11th-level ranger who has chosen the two-weapon combat style is treated as having Greater Two-Weapon Fighting, even if he does not have the prerequisites for it, but only when he is wearing light or no armor.