This brief supplement details a rare and thrilling event in the Bronze Citadel, Avernus. Stench cows, with their distinct orange hides, are a common yet crucial part of life here. They roam the blasted plains surrounding the citadel, providing meat and leather for the fiendish residents. The city's eastern districts, with their abattoirs and tanneries, bustle with lemure devils toiling under the watchful eyes of their higher-ranking overlords. For an in-depth exploration of the Bronze Citadel, please refer to the adventure module sharing its name.
Occasionally, the influx of stench cows into the city through the eastern gates swells to a tipping point, triggering a stampede. Far from being a disaster, this event is a cause for celebration among the locals. Herds of stench cows barrel through the streets in a riot of color and noise, causing chaos, destruction, and unfortunately, sometimes casualties. Imps and spined devils frolic above, adding to the frenetic energy. While residents typically steer clear of the stampede's path, newcomers often find themselves unwittingly caught in the tumult.
- from the publisher's blurb