Over the past few weeks David Dobkin's
Arthur & Lancelot has been busy casting the male leads. In the role of King Arthur is the
Game Of Thrones', and Sir Lancelot will be played by Joel Kinniman. It now appears as thought Warner Bros. has set their sights on Marion Cotillard for the villainess role of Morgana. In most of the versions of classic tale Morgana is the antagonist to King Arthur and Queen Guinevere.
David Dobkin’s Arthur & Lancelot appears to be fast taking shape at Warner Bros.: Vulture hears that Oscar-winning Frenchwoman Marion Cotillard is being offer the role of Morgana, the sorceress half-sister to Arthur. - nymag.com