Background
Morgan le Fay is in every game of Quest, and she is the reason Good can never feel safe. The Leaders' great late-game safeguard — the Magic amulet that forces a quest member to play Success — simply does not work on her. She accepts the binding with grace, and then plays whatever card she pleases.
She is Evil's queen on the board: a full member of the conspiracy who turns Good's most trusted ritual into a trap. When a Leader proudly announces "this quest is safe, I magicked the doubtful one," Morgan le Fay is the quiet possibility that makes the whole table's stomach drop.