A translucent azure crystal wreathed in swirling shadows, the Caliginous Cipher bears intricate markings that shimmer and shift like calligraphic frost. Its icy facets refract light into prismatic fractals, and a faint chill emanates from its core.

The Cipher does not act directly, but its presence catalyzes revelations – those attuned to its secrets find themselves drawn along the path of the investigation, with the artifact's markings providing vital clues.