A formidable fictional Celtic druid high priestess from a mythical Iron Age stands within an ancient stone circle during a dramatic autumn equinox sunrise, wearing flowing moss-green and silver wool robes with intricate Celtic knot and spiral golden embroidery and a towering deer antler crown with dangling mistletoe ornaments, her long silver-streaked hair adorned with golden oak leaf hairpins and falling amber leaves, gripping a sacred twisted oak staff, transcendent mystical expression, dramatic warm amber equinox sunlight illumination filtering through misty forest canopy contrasting cool blue stone shadow, rich details of ancient carved standing stones and distant misty hills, oil painting texture with digital precision, powerful dignified full-length composition against epic golden dawn sky with dramatic misty cloud formations and emerging ancient Celtic triple spiral symbolism, 4k hyperdetailed digital art