Super Lightsabers is an extra in . When turned on, it will make your lightsaber purple and doubles its damage, but you will still only take one heart off bosses.
See the duplicate lightsaver video in the video response yellow box place first, you need to do that before you do this one. This shows you how to make a super lightsaber with lots of the same crystal. First use the duplicate lightsaber glitch (in my other video) to make several of the same kind of lightsaber crystal then you can overload the saber with the stacked powers of that crystal many times over. Stuff like damage, critical threat and attack stack, but attribute stuff like wisdom, constitution and charisma do not stack.