Tonight is a big night for Marvel Studios, with the world premiere of Captain America: Civil War taking place in Hollywood. This movie will kick off Phase Three in theaters on May 6, and in just a few hours, the studio is also debuting the first trailer for the second Phase Three adventure, Doctor Strange, in theaters November 4. Benedict Cumberbatch will appear on ABC's Jimmy Kimmel Live! tonight to introduce the first trailer. But before the footage debuts, the Marvel Twitter feed has released the first poster, which goes inside the Sanctum Sanctorum!

We got our first look at the Sanctum Sanctorum with a set photo shared by producer Louis D'Esposito in December, and we also got another look at the Sorcerer Supreme's lair in concept art that debuted in January. In the comics, the Sanctum Santorum is a building that was built upon the site of pagan sacrifices, and before that Native American rituals, which is said to be a focal point for supernatural energies. The set photo also featured an artifact in front of the door, which many speculated is the Eye of Agamotto, a device the Doctor uses to defeat Dormammu in the comics. The Eye of Agamotto is also rumored to be the Time Stone needed for the Infinity Gauntlet.

Doctor Strange tells the story of Stephen Strange (Benedict Cumberbatch), an acclaimed neurosurgeon who uncovers the hidden world of magic and alternate dimensions after a near-fatal car accident. The film will show audiences corners of the Marvel Cinematic Universe never before explored, thanks to director Scott Derrickson, who is working from a script by Jon Spaihts, based on the comic book character created by Stan Lee and Steve Ditko. Doctor Strange is set for release on November 4, going up against Warner Bros.' Bastards and 20th Century Fox's Trolls.

The Doctor Strange supporting cast is rounded out by Tilda Swinton, Chiwetel Ejiofor, Rachel McAdams, Michael Stuhlbarg, Amy Landecker, Scott Adkins and Mads Mikkelsen. Marvel still hasn't revealed which characters Amy Landecker, Scott Adkins, Mads Mikkelsen and Rachel McAdams are playing just yet, but there are rumors that Rachel McAdams is playing the Night Nurse. Tilda Swinton is playing the Ancient One, with Chiwetel Ejiofor portraying Baron Mordo and Michael Stuhlbarg playing Nicodemus West.

Marvel Studios has had an unprecedented string of hits, with even the adaptations based on lesser-known comics, like Guardians of the Galaxy, becoming box office sensations. Do you think Doctor Strange will be a guaranteed hit when it arrives in theaters this November? Chime in with your thoughts, after checking out the new Doctor Strange poster below.