What is shelly's prayer to the west wind?

In the poem his prayer to the west wind is to get he strength and power like the wind.He wants the freedom like the wind.Further he wants to bring about changes in the world and the society like the wind which brings changes in land,water and sea by its action.Shelley by nature was a rebel and never followed rules.This is his prayer to get change by his poetry and work with the help of the west wind.