You are greatly skilled at making melee attacks from the saddle.
Benefit: When riding a moving steed, you may make a melee full-attack action as long as your steed moves at least 10 feet between each of your attacks. The steed may move before and after each of your attacks, as long as its total movement does not exceed its speed, but must move at least 10 feet between every melee attack you make.
Normal: Normally, a character riding a moving mount may only make one melee attack each round.
Adventurer’s Handbook: Genius Guide Volume 1