That force lightning came from this Dark Empire comic pack with Luke and a Cloned Emperor. It was a cool pack, but MAN that is some useful force lightning!
The coup de grace however, is the mixture of guitar, lightning, Skeletor, and Castle Grayskull. Skeletor has tried many ways to get into the ancient walls of Grayskull and the Castle has denied his every effort. ...but, can the Castle gates stand against Skeletor's hardcore hammering and vicious, red hot guitar licks? OPEN THE GATES, MIGHTY GRAYSKULL!! WILL YOU NOT OPEN FOR THE EVIL LORD OF ROCK?! BWWAAAAWWWWWW!!!