The Hex of Agony

User summary: The Hex of Agony has plagued the known worlds for centuries. Believed to be an unimaginably cruel or perhaps out of control rite of sacrifice, the Hex materializes for a period of six months, during which time it slowly tortures all life to death before disappearing again, leaving nothing but a six-sided depression in the earth and thousands of pain-wracked corpses to mark its passing.