Calendar of Nechrubel
The end is on a schedule. Every dawn the GM rolls a die — on a 1, a Misery wakes. The die is chosen by the GM and the group; the smaller the die, the faster the world bleeds out. Roll d66 to learn which of the prophecies takes flesh today. No Misery happens twice. When the seventh Misery comes, it is always 7:7 — the seventh seal breaks for the seventh and final time, the world dies, and the players' lives end with it. Burn the book.
The calendar is no metaphor. The events are the Nameless Scriptures transcribed by the monk Anuk Schleger from the whispers of Verhu, and since they were uncovered every prophecy has come to pass. To live in this world is to live inside a clock whose every tick is already written.
The Seven Psalms are catalogued in Nameless Scriptures — hollow cities, blood-cough, plague-flies, frost from Bergen Chrypt, waking dead at Graven-Tosk, rain unending, brother slaying brother, Anthelia drinking the color from the world, and finally Yetsabu-Nech, the black disk before the sun.
Nameless Scriptures, Verhu, Anuk Schleger, Two-Headed Basilisks, Nechrubel, Yetsabu-Nech, The Dying World
Each individual Misery could be expanded into a one-shot or scenario. The d66 lookup table is fully canonical and lives at Misery Table. Mechanical edge cases (Miseries triggering during scenarios, stacking effects) are GM-judgment in the source.