Nimue

Nimue is the Lady of the Lake, the warrior sorceress who once aided King Arthur. Guardian of the mystical island of Avalon, Unable to leave Avalon for more than a few hours before she loses her magic, Nimue used her powers to summon the champions who would become her Rangers when the island was threatened. As Lady of the Lake, Nimue possesses the power to control water in all its forms. She can turn any body of water into a portal to Avalon, and she can use reflections on the surface of water (usually the Sacred Fountain in her castle) to view events far away.