Appears in: The Underground Star
An unassuming coin with a human head on the heads side and a canine shaped head on the tails side. It is shiny and is about the size of a 50 cent coin. In the corner of the coin there is a small stamp that declares it “GNDN”. The coin itself holds a strong magnetic charge that is activated when the coin is moved quickly. This movement usually manifests in a coin flip. The polarity of the field changes depending on which side is face up. Heads up the coin attracts metal within a radius the size of a small room and can form a large tower if left undisturbed for a period of time. Tails up the coin repels metal as soon as it comes into contact with the surface the coin is currently laying on. Currently resides in the tunnels of the Warrens. Though, there may be others scattered about.
(source, author notes)