FirerodEditHitting a mob will set him on fire for a short time. The fire rod has one use and can not stack.
You can place it wherever you want, and mount it. When mounted, you can turn the cannon all around and look everywhere. To load the cannon, make sure you have gunpowder in your inventory, and right click on the cannon with a cannonball. Wait a few seconds, and then hit space (or your desired jump button) to fire!