Aang, the last airbender, stands confidently at the center of a swirling vortex of elemental energy, showcasing his mastery over air, water, earth, and fire. His iconic arrow tattoos glow with an intense brilliance as he enters the Avatar State, radiating an ethereal aura. In this ultra-detailed, HD, 8k depiction, Aang's expression is focused and serene, embodying the balance and wisdom of the Avatar. Around him, air currents spiral gracefully, lifting leaves and dust in a delicate dance. Water flows seamlessly from one hand, forming intricate, shimmering patterns. Earthen rocks rise from the ground, orbiting around him with a palpable sense of weight and power. Flames flicker and swirl in dynamic arcs, casting a warm, flickering light across the scene. His traditional robes have subtle modifications, incorporating intricate, ancient symbols representing each element, giving them a timeless, mystical quality. The background is a dramatic blend of stormy sky and calm horizon, symbolizing the balance between chaos and peace. Aang's presence is commanding and awe-inspiring, embodying the essence of the Avatar in perfect harmony with the elements.