Rivals: The Ninja Series:

When an extraordinary person, Avageline Lee, was born, Sixteen Realms surfaced all around the universe. She was the elemental master of everything.
As she grew older, she realized these powers were too hard to control for one person, so she scattered her powers throughout the Sixteen Realms. And she insured a time of peace. Laying on her deathbed, Avageline Lee set out the last bit of her powers, knowing the Realms would need every bit of power to defeat evil. Exhaling her last breath, chao...