Improved Combat Reflexes

Combat Reflexes (PH) , DEX 21,

There is no limit to the number of attacks of opportunity you can make in one round. (You still can't make more than one attack of opportunity against a single person in a round.)

There is no limit to the number of attacks of opportunity you can make in one round. (You still can’t make more than one attack of opportunity against a single person in a round.)

You can respond to any number of opponents who let their defenses down.