Blurred Movement

Illusion (Glamer)
Level: Alchemist* 1, Artificer * 1, Bard * 1, Bloodrager * 1, Magus * 1, Sorcerer */Wizard * 1, Summoner * 1
Components: V, S
Casting Time: 1 Standard Action
Range: personal
Target: you
Duration: 1 minute/level (D)
Saving Throw: -
Spell Resistance: -
  Your outline appears blurred, shifting, and wavering so long as you keep moving. This distortion grants you Concealment (20% miss chance).
  The blurring occurs only when you move at least 10 feet on your turn and ceases at the end of your movement. It is therefore mainly used to thwart attacks on your turn, such as Attacks of Opportunity. If you move at least twice your speed on your turn, the blurring lasts until the start of your next turn.
  A See Invisibility spell does not counteract the blur effect, but a True Seeing spell does.
  Opponents that cannot see you ignore the spell's effect (though fighting an unseen opponent carries penalties of its own).