Pathfinder 1e Feat: Combat Reflexes

Combat Reflexes

You can make additional attacks of opportunity.
 Prerequisites:
 Benefit: You may make a number of additional attacks of opportunity per round equal to your Dexterity bonus. With this feat, you may also make attacks of opportunity while flat-footed.   Special: The Combat Reflexes feat does not allow a rogue to use her opportunist ability more than once per round.
 Normal: A character without this feat can make only one attack of opportunity per round and can’t make attacks of opportunity while flat-footed.