Answer:
Thousands lay up gold within this house, But no man made it. Spears past counting guard this house, But no man wards it.
I'm a god. I'm a planet. I measure heat.
Green arrows grow out of my sides. I go from yellow to white. My babies fly in the wind. What am I?
Bury deep, Pile on stones, My mind will always Dig up them bones
Do you know what you can hold without ever touching it?
I am free the first time and second time but the third time is going to cost you money.