The Bellwarden's Sequence
You find a circular records chamber hidden beneath a crowded city hall. Rainwater whispers through a channel in the floor, carrying grit and scraps of market paper toward a bronze door. Three brass tokens rest on a stone console beneath blue witchlight: a roof, an open book, and a bell. Above them, a black dial shows an empty circle, a half-filled circle, a full circle, and a crossed circle. The sealed door bears the same three civic symbols, while a silent iron bell trembles whenever anyone touches the console.