Immortality

Immortality is the ability to live forever

Use
Immortality is the ability to be impervious to natural causes of death and have eternal youth, be unable to die, or both.

Users
The Elklorian Gods (and many of Earth's Gods as well), Fae, and Immortal Demons are the beings known to be immortal, though there could be others that are immortal as well that have not been mentioned

Trivia

 * It is unknown in what sense immortality is meant in this story: inability to die from old age, inability to age, or inability to die in any way at all