- This is a pretty simple concept. You install the machine and you get a bow that shoots TNT arrows. That's it. - You get two arrows that have different explosion sizes. To pick which arrow you use you hold it in your off-hand. - The command also makes all destroyed blocks and items float into the sky. - I personally find this useful whenever I complete a difficult map and need a way to release my rage. What better way to do that then by destroying the piece of art someone work hard creating?