Morgan Lannister

Morgan Lannister is a necromancer, the woman behind the Morrigan myths. She would resurrect dead crows to be her spies and eyes. She hung herself then brought herself back from the dead so she could no longer be found by spells designed to track the living. She tracked down her magical opponents/enemies/people on her hit list for various vengeance reasons and hung every single one of them. she's undead, probably, possibly a lesbian.