The Guardian Sigil is a dark, ominous emblem with a hand-drawn aesthetic, featuring intricate, asymmetrical designs that suggest ancient, forbidden magic. Its surface is rough and textured, resembling aged parchment with faint glowing runes that pulse eerily in the dark. The sigil's edges are jagged and uneven, as if torn from a larger, more sinister artifact, with a central eye motif that seems to watch the holder.