Philippa Eilhart (Polish: Filippa Eilhart) was King Vizimir's advisor and remained in Redania's court even after his death, for which she was likely responsible. She was one of the few sorceresses able to polymorph. She led the Thanedd coup against the Brotherhood of Sorcerers, intending to neutralize suspected traitors allied with Nilfgaard. Later, she helped found the Lodge of Sorceresses and is considered its leader.