An official announcement from Marvel probably isn’t far off, but Tilda Swinton has confirmed that she has signed on to play The Ancient One in DOCTOR STRANGE. While promoting this weekend’s TRAINWRECK, Swinton updated her Marvel status, telling Screen Crush, “We’re so far in talks that we’re not talking any more [laughs]. It’s done. The conversation has been had.”

Casting Swinton is huge for Marvel and DOCTOR STRANGE director Scott Derrickson. She is a one-of-a-kind talent and an incredible chameleon, disappearing into roles so completely that it almost looks easy.

She will do a fantastic job as The Ancient One and is genuinely excited about the role, saying, “I’m a Marvel fan and I think this particular world that DOCTOR STRANGE goes into is really, really, really exciting. I’m really interested as both an actor and a fan to see what’s done in this particular world. It’s all about creativity. It’s not about everything exploding at the end. It’s about something very different. The idea of playing The Ancient One is really just too tickling. I can’t say no to that!”

As Marvel continues to work toward a more diverse cinematic universe, some will fairly question the casting of a white woman for a role held by a Tibetan man in the comics. The gender swap won’t eliminate every potential criticism of white-washing, but this conversation, while it deserves to be had is not always going to be as open and shut as it seems.

This casting probably has far more to do with Tilda Swinton being interested in and available for the role than Marvel not wanting to put a Tibetan man on the big screen. Swinton offers a unique presence that few, if any other actors can replicate. Marvel boss Kevin Feige has consistently said that the studio, while focusing on diversity and undeniable cultural shifts, still sees making the best possible movie as its first priority. DOCTOR STRANGE has more potential with Swinton than without her.

The door just has to swing both ways. Actors of color will have to be seriously considered for traditionally white roles because, again, the goal is to make the best possible movie. Marvel may already be doing this in DOCTOR STRANGE if Chiwetel Ejiofor really has been signed to play Baron Mordo. Regardless, the dialogue surrounding these issues will continue, as it should.

DOCTOR STRANGE stars Benedict Cumberbatch in the title role and will be released on November 4, 2016.