Fantasy art of a mysterious portal to another dimension, dark forest, glowing blue and purple swirling energy, twisted tree branches, fog, mist, full moon, starry night sky, ominous, intriguing, vibrant, detailed, ominous, enchanting, surreal, otherworldly, moody, high contrast, digital painting, concept art, illustration, artstation, artbook, wallpaper, splash art, promo art, dramatic lighting