Random 50-50 chance of dying or living

This is a nifty redstone device that will randomly choose wether or not your should die. It was previously used in the adventure map "Herobrine's Diamonds" by me and a friend. If you want to see it in proper use then click the link for the adventure map. http://www.planetminecraft.com/project/herobrines-diamonds-adventure-map/

I got the idea when I saw a person in a public server make a device close to this but it has less then what I have now.

You can use this idea in an adventure map if you want, so u can "copy/paste" it.

Coordinates are x-170 z-270