Dissipation

With a snap of your fingers, as the foe's attack swings down to strike at you, your body instantly turns to ash and smoke, dissipating with the blow as you appear a short distance away, ready to strike back at your enemy. Using a reaction to an attack made against you, you can turn your body to smoke and teleport to any location within 30 feet of you that you can see. This movement does not provoke attacks of opportunity. 

Using this spell at higher levels increases the range of the teleportation by 5 feet per level.