Toppling Heave [General]
Your attacks have become so powerful that you can sometimes knock your opponents off their feet with your thrown weapons.
Prerequisites: Str 15+, Powerful Heave, Weapon Focus (any thrown weapon)
Benefit: When attacking a small, medium or large opponent, if you cause more than 10 hit points of damage in a single attack with a thrown weapon weighing at least 2 pounds to which you have applied the Weapon Focus feat, you may make an immediate trip attack against that opponent as a free action. The effects of the Improved Trip feat do not apply to this attack. The target may not attempt to counter-trip you.
Special: A fighter may select Toppling Heave as one of his fighter bonus feats.