For your magical and flashy rendering needs:
The Shadowcaster Spellribbons!
These figures consist of two Spellribbons which will fit V4 and every character based on her. You can separately move and scale the spheres and discs, hide and show most of the independent parts.
In addition, you will get three more articulated effects figures to complete the set:
A comet, a ball and a set of discs to arrange in your scene.
All figures come with two complete texture sets and glowing materials for both Poser 7+ and DS 2+.