Tap the arrow at the top left of the screen at any island, then tap the logo of three stars. Tap the star two spaces below it, then tap the view on the bar that reads "Pocket God Comic Pre-Order Bonus". Press "Enter" and type journey to uranus.
While playing, change the clouds from clear/slight overcast to the thunderclouds. Hold one finger on the thundercloud and hold it there, then change the clouds back to clear skies while keeping your finger where it was. When you have changed the clouds back to clear skies, drag your finger to one of the islanders like you would if the thundercloud was there, and it will make lightning without the clouds.