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.
A caribbean shape that makes ships disappear
I am seen in the water. If seen in the sky, I am in the rainbow, a jay's feather, and lapis lazuli.
What is full of holes but still holds water
My thunder comes before the lightning. My lightning comes before the clouds. My rain dries all the land it touches.
You use it between your head and your toes, the more it works the thinner it grows.