A full character turnaround sheet of a swampland spirit keeper, ancient marsh druid transformed by centuries of nature magic into a humanoid-plant hybrid with bark-like skin covered in glowing bioluminescent moss and flowering vines, hollow eye sockets emanating soft foxfire glow, wearing a cloak of woven swamp reeds and crocodile scales, clutching a gnarled oak staff topped with a crystallized swamp gem containing a trapped will-o'-wisps, dozens of tiny spectral frogs and insects orbiting as magical companions, dramatic thunderstorm backlighting with lightning illuminating twisted cypress trees behind, deep swamp green midnight teal earthy brown phosphorescent lime and storm gray color palette, Painterly digital art style, concept art for video game, front and back view with familiar creature details