Supreme Two-Weapon Fighting

Type of Feat: Class Specific
Prerequisite: Tempest Level 10
Specifics: A Tempest has truly mastered two-weapon fighting. While using Supreme Two Weapon Fighting a Tempest can make an fourth off-hand attack per round.
She loses this special ability when fighting in medium or heavy armor, or when using a double weapon (such as a two-bladed sword).
Use: Automatic.