Vertigo
A powerful, dizzying distortion effect

Center Shift the center point of the effect
Angle Turns the distortion effect
Warp The amount of pull the center point has on the image
Horizontal Bias Horizontal Warp Multiplier, for non-uniform distortion
Vertical Bias Vertical Warp Multiplier, for non-uniform distortion
Edge Behavior Method for handling pixels on and beyond the edges of the layer
Power Morphs smoothly into (or out of) the effect.
Super Sample Off, High, or Extreme. Higher quality, slower rendering.