In any city, in any country, go to any mental institution or halfway house in you can get yourself to. When you reach the front desk, ask to visit someone who calls himself "The Holder of Sorrow." The worker will frown and bite his lip. Hesitantly, he will lead you deep within the facility until you reach a rusted, charred iron door. He will open the door for you, and you must enter the darkness beyond it in complete silence. Once you are inside, the worker will quietly close the door and bolt it shut.
You will hear the many screams of tortured souls within a few meters of you. Should the screams stop at any time, quickly scream at the top of your lungs, "I do not feel sorry for you!" If they do not resume, hope for a quick death, as it is useless to run. However, if the screams return, continue walking forward in darkness. Keep walking until you see a dim light glow in front of you. Once this happens, immediately halt and stare at it.
You will be tempted to look upon the faces of the tormented beings hanging on the walls, and they will plea for your help. Do not answer their cries, for if you avert your eyes from the light, your mind will instantly be shattered and you will reflexively begin to gouge your eyes out.
The light will reveal a man standing with his back to you, and his presence will cause the screams around you to subside. He will only respond to one question: "Who will be spared when they come together?" He will whirl around to meet your gaze, and answer your question with excruciating detail. Do not interrupt his speech. What would happen if you do could not be described by the most sick and twisted criminal in the history of the world.
When he is done, he will hand to you what appears to be an ordinary rock. He will back away from you, the glow of the mysterious light fading away. The words will begin to ring in your mind, "He who is without sin shall cast the first stone." Close your eyes and count to ten. When you open them you will be standing in front of the front desk in the institution.
The stone is Object 85 of 538. It can only be thrown when they come together.