Void

In the beginning, there was the Void, where the Elder Gods dreamed. In their dreams were Law and Chaos, inherent forces of unity and entropy. Through endless opposition these forces of unity and entropy elected champions who became gods, who in turn formed planes of existence that reflected their principles. This is how the world was created.

Now, the Void exists as the space between planes. Unknowable, untouchable, this is the realm of the Old Ones who still dream their ruinous dreams of unity and entropy. The dreams of these sleeping beasts turn the Great Wheel in the endless battle between chaos and law. And may the gods help he who awakes them.

The Black Sea
The void may be spotted from the material plane at night, as its darkness envelops the sky. During the day, that horrid dimension is warded off by the holy light of the Sun. Most of the void is utter nothingness, a sea of black traversed by eldritch monsters of unimaginable size and horror. Only through the enchanted dreams of a powerful wizard is this dark ocean explorable. And only the most truly powerful wizards have ever managed to enter the Black Sea this way, sailing on their ghostly sea-ships of dreams. Even fewer wizards survive.

The Stars
Floating amongst the sea are the stars, concentrations of Arcane Power. Reaching the stars is almost as difficult as it is ill-advised. However, there are rare artifacts and rituals which could assist the foolhardy adventurer in forming a conduit through which to travel to these distant lights. It is believed that the stars hold timeless pocket-planes that house the Elder Gods themselves. The truth is not known, as none have ever survived such a journey.

The Moon
Finally, the void is also home to the Moon. The Moon is a silver pocket plane which dominates the night sky. How it came to be is unknown, but it is much like a smaller, more twisted version of the material plane. Magic is far more dominant on the moon, and laws of physics are mostly ignored. Creatures dwell here, some building chaotic cities prone to magical disaster. They are known as lunar-beings, the most powerful of which can be found traversing the Black Sea much in the same way that powerful human wizards may. One the most rare occasion, a lunar being may visit the material plane through some magical means of transportation or another. The moon may be reached when it shines full in the sky by completing extensive and long-forgotten arcane rituals.