Unseat

Prerequisites: Str 13, Ride 1 rank (Before Mods), Mounted Combat, Power Attack, Improved Bullrush, Base Attack Bonus +1 (Before Mods).

Benefits: When charging an opponent while mounted and wielding a lance, resolve the attack as normal. If it hits, you may immediately make a free bull rush attempt in addition to the normal damage. If successful, the target is knocked off his horse and lands prone in a space adjacent to his mount that is directly away from you.