found thew way to make a invisible saber and kill ppls with it.
Still working in 1.2.1
make your saber spin arround you then do a taunt to bug it on there.
Then simply go kill your self in a pit or something whill keeping holding Attack.
When you come back on you see your saber. But turn it off and go close of someone.
Its do the same damage as a throw so 30 damage.
This is the Invisible Saber bug i finaly found.
Thanks to gc Dark from my clan to showed me how to do it.