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.
What dress does everyone have, but no one wears?
I'll bring out your bulls and slow your roll. I may even come out of your skull.
I go up and down at the same time. Up towards to sky and down towards the ground
There is one in a minute two in a moment and none in a thousand years. What is it?
No matter how little or how much you use me, you change me every month.