"If at first you don't succeed, try, try again," said someone I'm too lazy to look up right now. Here is a much better attempt to combine all six weapons of the Toa Mata into one. Once again, pieces were only used from the Toa Mata set.
I call it "The Staff of Protodermis" or "The Staff of Sealing". It has the power to shoot a beam of energy and create a "Toa Seal". The Toa Seal of the Toa Nui can only be unlocked if the individual in question knows what six elements were used to make the Toa Seal
I'm not sure I like using the black as my base color and can't decide whether to change it or not. The torso and feet can be replaced with any of the main colors of the Toa Mata: Red, Blue, Green, Brown, Black, or White. (Although, I've always thought of the white version as the "Paladin Version".) Sadly, I don't have pictures for all these different color variations at this time.
Also, I had to cannibalize some of the pieces of the Toa Nui to make the staff, so if you make the staff you can't quite make the Toa Nui in all it's glory. However, the Staff of Protodermis will return when I make my "Omega Toa Nui".