The BCC Rays Radiant Edges filter creates light from the edges of the image. I created a silhouette of the hand by applying the Linear Light mode to the keyed footage. The ball was created with BCC Sphere and then the Rays Radiant Edges filter was applied to both the hand and the ball.

I used a silhouette alpha mode on the keyed footage, dropped a black solid layer behind it to turn the hand black and then applied Colorize Glow on the keyed layer to soften the edges.

Advanced Lightening is an Adobe filter that comes with After Effects. In this clip it was applied to a blue solid layered on top of the keyed hand footage. Advanced Lightening lets you set attributes for the core, glow, turbulence, forking, and decay. I applied the filter twice, creating one lightening bolt for the left hand and one for the right. I also applied a BCC Glow Alpha Channel effect to the hands to simulate the blue light from the bolts haloing the hands.