The Shadow Realm

Overview
The Shadow Realm is a realm of pure darkness where the embodiment of all evil resides. The Gods are believed to use it as a prison for the darkest most corrupt creatures. The realm resides in a pocket dimension within space-time itself. While wizards and other power users have never observed the realm itself they have been able to calculate and discern the fact that the Shadow Realm lies within the fabric of the universe inside space-time itself. Due to their calculations the most powerful wizards believe there is an object that allows travel between the Human Realm and the Shadow Realm. They also believe it is the only way to enter the Shadow Realm because if not the embodiment of evil would be able to escape into the Human Realm and the fact the wizards have been unsuccessful in finding a way to enter the realm. Those that believe in the item call it the Shadow Balance.

It is believed that the Shadow Realm can manipulate itself and the minds of those inside to make them believe they are in places of immense evil, darkness and corruption. Even though this is unknown some hypotheses suggest that this is the doing of Annihilus. As some people believe he is supposedly trapped inside the Shadow Realm and has been so for hundreds of millions of years trying to regain his full power and strength.