Grim Reaper, green lights, blue flames, souls and ghosts, styx, stands in a nautical-themed underworld, on a boat, oaring, holding a lantern made of bones, the other grasping a oar, entire scene cast in eerie, boat made of bones, skeletal boat, ghostly light, shadows dance on craggy rocks, mist coils around a churning sea, river styx, digital painting, dramatic lighting, ultra-realistic. (vibrant masterpiece, (8k1.5), UHD, very detailed, high-quality, best artist, sharp edges, detailed textures, full view, atmospheric lighting, stunning visuals)