Prerequisite

base attack bonus +9, Dex 15, Exotic Weapon Proficiency (spiked chain), Weapon Focus (spiked chain), Combat Expertise, Chain Wrapping, Two-Weapon Fighting

Benefit

You can use your spiked chain as double weapon, and you incur all the normal attack penalties associated with fighting with two weapons, just as if you were using a one-handed weapon and a light weapon. You cannot use the spiked chain as a reach weapon while using it as a double weapon, but you may switch techniques once per round as a free action.

Special

A fighter may select Chain Cyclone as one of his fighter bonus feats.