Raining fire and brimstone, calling forth the great seas, shouting mountians to the ground, creating life, expanding forests, and most important of all, shaping the world to your whims.
That is the role of a god. You will be the deity of this new land. An entire planet where you can transform everything to your desire.
Be warned! There are others in existence as well. Take heed, and perform your duties as a Diety well.