Wolf Berserker( Unapproachable East, p. 45)
You have studied the fighting style of the wolf and employ its tactics in combat.
Ability to rage, membership in the Wolf berserker lodge (see Berserker Lodges in Chapter 10: Rashemen). REGION: Rashemen,
You gain a +4 bonus on trip attacks and on checks to resist an opponent's trip attacks.
Characters with this feat may choose the Improved Trip feat even if they don't meet the other prerequisites for Improved Trip.