Kosuira, Child Sorceress was the human apprentice and charge of Tenith'oru. Although child-like in appearance, her mein and power suggested experience beyond her years. She could occasionally be found on the frozen cliffs of the Northern Vasnari Mountains accompanied by her elemental ice hellions. The centuries-old accomplice of the half-Tsol'teth, her untimely death at the hands of Agith'tai was the catalyst for his divulging of the secrets of Depthswalking.
Although dead in the present age, students of Depthswalking may learn their abilities from the memory of the child sorceress.