Act as a mystical fantasy artist with expertise in dark, atmospheric scenes. Create a highly detailed digital painting of a [wise old witch] with [long silver hair and glowing amber eyes], stirring a bubbling cauldron under the eerie light of a [blood moon]. The scene should include [ancient spellbooks floating mid-air], [mystical herbs scattered on a wooden table], and [shadowy forest creatures watching from the trees]. The witch wears a [tattered cloak adorned with celestial symbols], and the potion emits [swirling purple and crimson vapors]. The background features [a gothic tower silhouette] against a starry sky, with [cobblestone path leading into the dark woods]. Render in a style blending realism with fantasy, using rich, moody colors and dramatic lighting to emphasize the supernatural atmosphere.