A detailed illustration of Sigyn, the Norse mythology goddess, depicted in a fierce fighting stance. She wears a Viking-inspired armored dress with green accents, her blonde hair flowing gracefully. Sigyn is shown casting magic spells, with a cinematic lighting that highlights her crown adorned with horns. The solo focus on her dynamic pose brings out her strength and determination. Her outfit is intricately designed, featuring Nordic patterns, while her eyes reflect a deep wisdom and resolve. The background hints at a mythical Norse landscape, swirling with magic. Her hands, though wrought with power, are delicately rendered, emphasizing her balance of strength and grace. Despite the dynamic action, every detail is carefully crafted, capturing her as a powerful and enigmatic figure in Norse lore.