Interesting. There are a couple of add-ons to Daz Studio to make "magic circles" for your characters, "HeroFX Alchemy and MagicFX" and "Shadowcaster Spellribbons". The below was made with the Shadowcaster add-on. The other looks like it would do Velkan circles better. (Go to Daz3D.com into their 3d models section and search on the above phrases.)
If anyone cares, the components that went into making this are:
Daz Studio (free)
XinXin figure (part of Aiko 3.0 figure, free)
Aiko 3.0 Ultra Catsuit (not free)
Aiko 3.0 Body Armor (not free)
A3 Ponytail (not free)
Shadowcaster Spellribbons (not free)
Ultimate Lightsaber set by Dodger (free, found on VanishingPoint.biz)