Ghostwheel

The Ghostwheel, which Merlin invented as a surprise for Random, can probably be decribed as the ultimate Trump. A super-computer of the most super kind, it has the ability to search through Shadow and let the user keep track of whatever Shadows he wants. It works by creating the equivalent of Trumps, then searching through them all. By incorporating elements of the Pattern into its design, Merlin gave it the magical qualities it needed to avoid having to make it an initiate of the Pattern or the Logrus.

There is a Trump for the Ghostwheel (Merlin created it), which allows the user to program it from afar. This Trump is a kind of magical remote terminal, and the Ghostwheel responds to the user's spoken commands. Merlin's idea was to give Random that Trump, to let the King of Amber keep an improved watch on Shadows both friendly and enemy. The Ghostwheel has developed a personality, It didn't like Random's order that Merlin shut it down, and it's not even talking to it creator. Seems Merlin has a few bugs to work out.