A highly detailed 4K image of a jar filled with vibrant, glowing green poison, bubbling with an eerie, necromantic aura. Inside the jar, a menacing skull is partially submerged, with its eye sockets glowing ominously. The jar is adorned with a weathered label, faintly illuminated by the greenish magic emanating from the liquid. The jar’s surface reflects a dark, shimmering light, while spectral tendrils of energy and swirling mist dance around it. Rendered with photorealistic clarity, the scene combines a sense of danger and mystical allure, showcasing the jar’s unsettling yet captivating presence