hammerfall lightning storm

a very powerful weapon in the physics game hammerfall that can be created by combining a sword (preferably the golden legendary one) with a purple gem (lightning) and a red one (mystical battle aura).
Note: wood does not conduct electricity very well, therefore making the lightning bolts ineffective against the target.

[@JoeyZero]

Where did you get the purple gem? I've only been able to find the red, green, and yellow gems (not including the one that comes standard in Ritter)