Who's that green-faced witch on the new 'Oz' movie poster?

Walt Disney Studios has released the latest poster for Sam Raimi's "Oz: The Great and Powerful," a kind of prequel to L. Frank Baum's "The Wizard of Oz." The movie's hardly short on photogenic stars, but "Oz's" new character one-sheet features an ominous-looking witch covered in green-faced makeup that renders the actress unrecognizable.

According to Entertainment Weekly, Disney won't confirm whether it's Mila Kunis' Theodora or Rachel Weisz's Evanora looking so wicked, though Weisz does sport a lot of green in the trailer.

Here's the film's official synopsis:

When Oscar Diggs (James Franco), a small-time circus magician with dubious ethics, is hurled away from dusty Kansas to the vibrant Land of Oz, he thinks he’s hit the jackpot—fame and fortune are his for the taking—that is until he meets three witches, Theodora (Mila Kunis), Evanora (Rachel Weisz) and Glinda (Michelle Williams), who are not convinced he is the great wizard everyone’s been expecting. Reluctantly drawn into the epic problems facing the Land of Oz and its inhabitants, Oscar must find out who is good and who is evil before it is too late. Putting his magical arts to use through illusion, ingenuity—and even a bit of wizardry—Oscar transforms himself not only into the great and powerful Wizard of Oz but into a better man as well.

"Oz: The Great and Powerful" comes out March 8.