Nebula Dragons are nocturnal creatures. With the best eyesight to be found, they are often seen staring into space. Each dragon tends to observe a particular nebula and will eventually change their colors and patterns to match it. As the nebula changes over time, the dragon changes with it. The more intricate the design of the nebula, the better chance an individual has of attracting a mate. It is said that the markings on no two Nebula Dragons will be exactly the same.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons is usually marked by the growth of a hatchling’s wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. In Galsreim, dragons and humans coexist peacefully.

Tome of Bound Tongues is named, like all his siblings, for an object he guards. That book is bound to his back with a heavy iron chain, though he rarely leaves his lair in Oramus' Cage of His Wings.

A genteel and loquacious dragon, he spends much of his time in the pursuit of history. It's said that he may be bribed into a service by presentation of a new tome, or by the giving of a memory, and he particularly favors that time before he, like the other Infernal dragons, was caged.

Some say that the Tome has his own secrets, but who could know Those who speak long with him rarely spend much time in conversation with anyone else, if they return.