Retribution (Ex)
At 15th level, the cavalier can take retribution on those who dare to strike an agent of his faith. Whenever an enemy makes a successful melee attack against the cavalier or an adjacent ally devoted to the same faith as the cavalier, the enemy provokes an attack of opportunity from the cavalier. The cavalier receives a +2 morale bonus on the attack of opportunity. If the attack made by the enemy was a critical hit, the cavalier may treat the enemy as the target of his challenge for the attack of opportunity. The cavalier can use this ability once per round.
Order of the Sword Cavaliers who join the order of the sword dedicate their lives to the code of chivalry, living a life of honor, valor, and fairness. Cavaliers of this order tend to swear service to a lord or a lady. Of all the orders, the order of the sword is perhaps the broadest in terms of its focus and ideals. Edicts: The cavalier must show courage in the face of danger, mercy to those who have wronged him, and charity to the poor and the meek. He must be just and honorable at all times and in all things. He must defend his honor and, above all else, the honor of those he serves.