Dark Dimension (Earth-7623)

"All things age. All things die. In the end, our sun burns out. Our universe grows cold and perishes. But the Dark Dimension, it’s the place beyond time."

- - Quan Chi to Doctor Fate

The Dark Dimension is a dimension within the Multiverse that is ruled by Shuma-Gorath. A hostile universe, time does not exist there, which allows it to be a source of life-extending spells and the removal of mortality. However, using such power is extremely dangerous and easy to corrupt an individual, which nearly happened with the Ancient One.

Trivia

 * Based on both the original Dark Dimension as well as the Phantom Zone.