Who was Ashnod? Magic: The Gathering lore Brothers' War

Yet much as the wain was diminished by the dragon engine that served it, so to was Mishra dimmed by his companion. She was a slender woman with hair the color of blood-stained rubies, dressed in dark clothes, a flowing cape billowing behind her. She carried a simple, unadorned staff of black wood and seemingly did not recognize the crowd's shouts, for she kept her gaze forward. From Urza's description, Tawnos knew this must be Ashnod.

Ashnod is most likely the most enigmatic character in Magic: The Gathering's lore. While she is oftentimes mentioned on flavor texts in several M:TG sets, her only appearance in the books is in the first part of the Artifacts Cycle, The Brothers' War and she's briefly mentioned in the second part of the cycle when Urza discovers that she was in fact a Phyrexian infiltrator sent to corrupt his brother.