Answer:
What can be seen but never found that only hides in the unwound?
A dagger thrust at my own heart, dictates the way I'm swayed. Left I stand, and right I yield, to the twisting of the blade.
Whoever makes it, tells it not. Whoever takes it, knows it not. And whoever knows it wants it not
I'm white, I'm round, but not always around. Sometimes you see me, sometimes you don't.
There are millions of me. I am very small but when moving fast I am deadly.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.