Source: Dragon #309
You have mastered the initial secrets of the Broken Fist martial arts style - a hard/soft form emphasizing movement, knockdowns, and fast strikes. At this level of mastery, you become adept at knocking opponents off their feet.
Prerequisite: Str 13, Dirty Fighting, Improved Initiative, Improved Trip, Improved Unarmed Strike.
Benefit: You are treated as one size category larger than you actually are for the purpose of trip attempts.