Magic Coin



A Magic Coin is an object used by Demons. It acts as both a tracking device and a listening device. The coin's magic is strong enough that not even Hexbags can defeat its power. Crowley planted a one of these coins in the Winchesters' Impala after their first encounter. He used to this device to spy on the Winchester and learn about their plot to collect the four Rings of the Horsemen to re-open the Cage and re-imprison Lucifer. Later, another demon planted a magic coin on Crowley, allowing a Hellhound to track him. (The Devil You Know)