Pursue

(Eberron Campaign Setting, page 58, DnD 3.5)

[General]

You have the ability to follow in an opponent's wake.

Prerequisite

Combat Reflexes

Benefit

In combat, when an opponent in an adjacent square takes a single 5-foot step to a square that you do not threaten, you can spend 1 action point to move into the square the opponent just left. This movement occurs after the 5-foot step but before any other actions, and it does not provoke attacks of opportunity.