A dark, eerie paintbrush with a long, slender handle made of aged wood, showing subtle cracks and a slightly worn texture. The bristles are uneven and appear to be made from some unknown, shadowy material, giving off a faint glow in low light. The handle is intricately carved with cryptic symbols that seem to shift when viewed from different angles, adding to its mysterious aura. The overall design is asymmetrical, with the brush head slightly larger than typical, suggesting it's used for more than just painting.