You move at a haunting speed, so much so that enemies have a hard time hitting you.
Prerequisite(s): Dexterity 4+
Benefit(s): When moving in a straight line that is equal to at least half your normal move speed (at least 3 squares for a 6 square move speed) you gain 20% concealment on attacks of opportunity made against you while moving. This doesn't take effect after you have stopped moving or before you began moving, only during.