Later authors use her good and bad qualities to construct a deeper character who plays a larger role in the stories. In Chrétien's "Yvain, the Knight of the Lion", for instance, she is praised for her intelligence, friendliness, and gentility. On the other hand, in Marie de France's probably late-12th-century Anglo-Norman poem "Lanval" (and Thomas Chestre's later Middle English version, "Sir Launfal"), Guinevere is a vindictive adulteress and temptress who plots the titular protagonist's death after failing to seduce him. She ends up punished when she is magically blinded by his secret true love from Avalon, the fairy princess Lady Tryamour (identified by some as the figure of Morgan le Fay). Guinevere herself wields magical powers in "The Rise of Gawain, Nephew of Arthur".