Emmet Brown's Stopwatch

Origin
In the “Back to the Future” Trilogy, Christopher Lloyd portrays Doctor Emmet Brown, friend of Marty McFly and inventor of the time machine, built out of a DeLorean DMC-12. Doc Brown is notorious for his inventive genius along with his forgetfulness and naivety over the consequences of his actions.

Effects
Turning it on increases understanding of physical and mechanical sciences and allows the user to build any device. Setting the time back one minute creates a visual field surrounding the user, where they can see the events that will happen in exactly one minute. However, the artifact has several downsides. It causes the user to drift and become absent minded and destroys their good judgment. It also grants the user disregard to the law and superior forces.