The Fortress of Zhon
Waiting at the top of the staris from the lower depths of the hidden temple beneath the Gates of Zhon waits a creature of immense power. This thing manifests itself as haunting memories of whomever it comes into contact with. It uses those memories to beat at their pyshce and devour their soul.
Many a hapless adventurer has been ensnared by the guilt of the memories of those they left behind. This is but a taste of the evil that lurks that shadows of Zhon.