A stunningly lifelike fantasy troll stands amidst an ancient forest, crafted in exquisite detail with octane render and unreal engine precision. Its skin, marked with deep, textured furrows, glimmers with an earthy sheen, capturing the essence of its mythical origins. The troll's eyes, a striking shade of glacial blue, convey a depth of emotion, reflecting the ambient light in high dynamic range. Towering and muscular, it wears a cloak of lichen and moss, seamlessly blending into the verdant surroundings. Sunlight filters through the canopy, casting intricate patterns on the hyper-detailed troll, breathing a sense of vibrant realism into this mystical scene --ar 9:16.