God rays effect
Cast rays of light from the top of the screen. This won't work well if shown on top of the background color of the scene. Be sure to use an object acting as a background or a floor.

The Angle tilts the direction of the rays. The Center X and Center Y set the origin point the rays come from: disable Parallel to make the rays spread out from that point (like a sun or spotlight) instead of running parallel to each other.
Animation Speed makes the rays shimmer over time — set it to 0 to freeze them into a static beam of light.
Reference
All effects are listed in the effects reference page.