A friendly fantasy troll with a slim build and humanoid face, male, featuring long, thin, hanging ears. The troll has a highly detailed face adorned with a mischievous grin, gazing directly into the camera. Seated by a crackling campfire in the heart of a dark fir forest, he extends a mushroom toward the viewer, invitingly. The scene captures a portrait imbued with fantasy art elements, set within a dark fantasy atmosphere. The backdrop incorporates intricate 3D fractals and swirling light particles, creating a shimmering, surreal environment. The composition is perfect, emphasizing astonishing details with an octane-render quality trending on ArtStation. The 8k artistic photography showcases photorealistic concept art, enveloped in soft, natural, volumetric cinematic lighting, highlighting the mystical allure of the scene.