Detailed digital art illustration of a dark misty swamp in a forest at night. In the center, a group of large anthropomorphic frogs with glowing eyes stand in a circle around a pentagram made of sticks and algae, performing an occult ritual. Rising from the swampy water in the middle of the pentagram is a shadowy demonic figure with horns and wings. Eerie green light emanates from the pentagram. The overall mood is sinister and supernatural. Highly detailed, dramatic lighting, photorealistic style.