Born in the same year as Resha, Yarsha Zahara would make an appearance during the Third Major Disaster in Sumatra Chronicles.
Two years from now, the Zahara Kingdom chances upon a mysterious mineral, unlike anything in one of the mountains in their territory. Yarsha Zahara forges her Human Avatar using it, attaining a terrifying level of strength.
Her power wasn't geared in terms of fighting but was strategic in nature, capable of refining the Humans Avatars of others and on rare occasions, even mutating them.
Yes, she was the first among humans to create a Mutated Human Avatar, allowing the talented cultivators of her Kingdom to possess two Natures.
That fact alone instantly caused the strength of their Kingdom to shoot up exponentially, making them reach an Empire level in a mere few decades.