Answer:
I can only be played on a windy day
I run smoother than any rhyme, I love to fall but cannot climb. What am I?
I stand in one place yet I fill a whole room. I can be filled with molten rock and come in every hue.
Take it and you will lose or gain more than the others.
In wealth I abound; in water I stand; as a fencer I'm valued all over the land; at Venice I'm famous; by farmers I'm prized; respected by law yet huntsmen despised; consternation and ruin ensue when I break; And the beasts of the forest advantage won't take.
No matter how little or how much you use me, you change me every month.