User blog comment:El Alamein/Voldemort vs. General Grievous/@comment-5138827-20130925025722/@comment-4803039-20130927140754

I can't believe I'm actually jumping into this, but the concept principle of the lightsaber is that it would be along the lines of plasma trapped in a magnetic field. The magic may not have any effect on it.

Then again, I may be completely off base...