Just something I drew in 5 minutes on Photoshop. It may be useful for someone:

You can alter it's color in your favorite image editing application in order to get several types of plasma effects!
EDIT: I used AirBrush (yellow+white in middle), Smudge (trail) and Color Dodge (get the energy concentration feeling)

You can alter it's color in your favorite image editing application in order to get several types of plasma effects!
EDIT: I used AirBrush (yellow+white in middle), Smudge (trail) and Color Dodge (get the energy concentration feeling)