The Sinister Bell is a haunting, ornate bell with a dark, gothic design, featuring intricate engravings of eldritch symbols and grotesque figures. Its body is made of a tarnished, blackened metal with a rough, weathered texture, suggesting age and frequent use in dark rituals. The bell's handle is wrapped in aged leather, and its clapper is a small, sharpened bone that produces an eerie, resonant chime when rung.