The Fast of the Obsidian Lord

The chamber is a perfect circle of polished obsidian, its walls reflecting the flickering light of four stone basins overflowing with steaming, fresh blood. In the center stands a towering black obelisk, its surface etched with intricate, weeping veins that trace downward to a dry circular reservoir at its base. The air is heavy with the metallic tang of copper, yet beneath it lies the unnatural, mouth-watering aroma of a roasting feast. In the darkness of the ceiling, faint movements suggest the presence of entities that watch the basins with eternal, unblinking longing.