Original Gatling Gun

Origin
The prototype created by Dr. Richard J. Gatling in 1861 for the Union during the Civil War. Multiple barrels would be loaded with ammunition and fired its rounds until it ran out, allowing the next to fire. It was imbued with its inventor's hate of war, but as artifacts often do, the intentions became twisted.

Effects
Whereas Dr. Gatling hoped to reduce the size of armies & show people the futility of war, the Gatling gun, if activated by significant amounts of aggressive or violent thoughts in its vicinity will attempt to destroy the source of the disturbance, moving, reloading, & firing itself as though a crew of soldiers was manning it.

As there is no currently known limit to the gun's ammo, the only way of stopping it once it gets set off is to think "happy thoughts" long enough to splash it with neutralizer. Store away from Bobby Jones' Golf Clubs.