The Cage is a nickname for Sigil, coined by its inhabitants, often called Cagers. It is derived from "Birdcage," so it's a pretty harsh judgment on the Burg.
On the Primes, self-proclaimed God-Emperors are a copper a dozen; if you want to impress Planewalkers, your title will have to be something a bit less ostentatious. That, or you could just offer more jink.
— Roger the Scribe to a Prime ruler who needs to recruit Planewalkers
