You may pursue those who attempt to flee your grasp.
Benefit: When an opponent moves out of your threatened area, you may immediately make a Reflex save (DC equal to opponent’s Dexterity score). If successful, you may immediately take a 5-foot step toward the opponent to keep him in your threatened area. Effectively, if he moves again, he has moved twice through your threatened area.
Undefeatable: The Collected Feats Sourcebook, Copyright 2009 – 2010, Louis Porter Jr. Design, Inc. Undefeated, Copyright 2011, Louis Porter Jr. Design, Inc.