How do you get a god rod?

I'm curious, could you elaborate on the process of acquiring a so-called 'god rod'? Is it a physical object, a metaphorical term, or perhaps a reference to a specific tool or instrument? Are there specific steps or requirements that must be met in order to obtain one? And if it's a physical item, what kind of material is it made of? Is it rare or exclusive? I'm intrigued and would love to know more about this mysterious 'god rod'.