Answer:
I cut through evil like a double edged sword and chaos flees at my approach. Balance I single-handedly upraise through battles fought with heart and mind instead of with my gaze.
My teeth are sharp my back is straight to cut things up it is my fate.
I go into the water black and come out red. What am I?
A single syllable do I claim black was my most famous name; Fetal to mortals here below thousands have I slain in a single blow.
Wind and cord combine, buzzing in the box. In all this we find, though to some the use is lost. What am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.