Dark Sun: The Scorched World of Athas
Realm of the Dead Gods
Also known as Pluton, the Realm of the Dead Gods is deep within the Astral Sea and contains the remains of numerous dead gods.
Dregoth discovered this realm and is using it as part of his scheme to become a true god.
Jax discovered information about Pluton in the library of Moil. She later entered the realm attempting to escape Moil and foil Dregoth’s plans.