have it zoom in and out once in a while Oscillation Effect
edit
Introduce texture
edit
have it zoom in and out once in a while Periodic bursts
edit
have it zoom in and out once in a while Depth of Field
edit
Dynamic Darkening
edit
have it zoom in and out once in a while Acceleration/Deceleration
edit
Embrace light
edit
have the color pallete change over time Palette cycling
edit
Depth Gradient
edit
click to explore, then edit