Answer:
The sharp slim blade, that cuts the wind.
What has a spot and is very bright, is sometimes, red, white, blue, yellow or green and is often blinding.
Golden treasure I contain, Guarded by hundreds and thousands. Stored in a labyrinth where no man walks, Yet men come often to seize my gold. By smoke I am overcome and robbed, then left to build my treasure anew
A house of wood in a hidden place. Built without nails or glue. High above the earthen ground It holds pale gems of blue.
What is it that has four legs, one head, and a foot?
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.