Seraphim

The Seraphim, called the Aetrufey in their own language, are an order of divine beings that were born from the first rays of aether emanating from the gods. Only the seven Thrones are truly immortal; the rest merely age at a vastly decelerated rate, compared to most mortals.

Physiology
The bodies of the Seraphim were born from pure aether, rays of radiance from the gods themselves. They are thus unaffected by disease, and most injuries they might incur are swiftly healed.

Language
The language of the Seraphim, called Aetrufex, is said to be capable of sundering whole planes and creating new ones. Those without the necessary willpower to control their use of the language, however, risk wiping themselves from existence. Even the knowledge of the words themselves is too much for some mortals, which is why the Aetrufex language is mostly only spoken among the Seraphim themselves.

Names

 * Haliel