The Danno rock divination system

Hello, it's been awhile since I've had an entry and I figured the first assignment in my Art 103 class would make a good entry. The task: make a divination system using rocks. So I found some rocks and made some instructions. Hopefully nothing goes crazy, mainly some horrible beast from the depths of the empyrean is not summoned. I have yet to find a map, though a park from my hometown is more than likely going to be the victim.