A Robot That Does Not Scream

Description
This artifact was formerly the Robot That Screams, a RoboSapien whose enchantment gave it more intelligence, volume, and mobility than the simple toy it once was (not to mention a magical power source) which it used exclusively to scream in a loud, annoying, and chaotic manner.

After using the Toaster of Alchemy on the this with the mute button from a remote, the Robot That Does Not Scream was created. It is virtually identical, however instead of screaming loudly, it emits a silent scream that negates sounds. This led to a ban on using the Toaster of Alchemy on artifacts.