Act as a visionary fantasy artist with 10+ years of experience creating surreal and immersive landscapes. Generate a highly detailed MidJourney image of a [GLOWING, RUNE-ENGRAVED] portal floating in a [MYSTICAL FOREST AT TWILIGHT], with swirling [COSMIC ENERGY] visible through its shimmering surface. The portal should radiate an otherworldly [AQUAMARINE/PURPLE] hue, casting eerie reflections on the surrounding ancient trees and moss-covered ruins. Include subtle details like floating debris being pulled into the vortex, arcane symbols flickering around the frame, and a faint silhouette of a [FANTASTICAL CREATURE] emerging from the rift. Use a cinematic 16:9 aspect ratio with dramatic lighting to emphasize the contrast between the dark forest and the portal's radiant energy.