Create a stunning and vibrant illustration of a breathtaking landscape dominated by a massive, radiant red sun either rising or setting. The sun casts a brilliant glow, illuminating majestic mountains rising above a sea of thick, fluffy clouds. The mountains are rugged and sharp, partially veiled in mist, adding to the dreamy atmosphere. The sky transitions from deep red to lighter hues, with scattered clouds for depth. Inscribed in the sun's center are the words 'Good Morning!', evoking a serene morning setting in a vibrant and picturesque 3D render for a captivating poster. The vibrant colors and intricate details enhance the fantastical atmosphere of the scene, inviting viewers to immerse themselves in a world where ancient mysticism and natural forces collide in a mesmerizing display of beauty and danger.