Benedict Cumberbatch casts one helluva spell as an intellectual, cerebral superhero with the ability to shape-shift his surroundings in Scott Derrickson’s Doctor Strange (B), a mostly engaging entry into the Marvel multiverse. The title character is an arrogant surgeon who gets his comeuppance in a crushing car accident and subsequently turns to mystical arts in an effort to heal. Cumberbatch is an unlikely protagonist, but he’s witty, literate and believable in a world in which the supernatural stakes mount mightily. Like Tony Stark/Ironman, his smarminess and smarts with science help his journey take flight. Derrickson cribs from Christopher Nolan a bit too much with secret societies of Asian warriors and Inception style city bending, but the overall vibe is cunning and imaginative. If anything the pace could have been picked up in Kundun style monastery sequences. The effects of hopping out of one’s body make for some giddy multitasking fight sequences, and the hero’s CGI cape should win best supporting costume. Tilda Swinton commands her every mesmerizing sequence as a trippy bald sorceress in a mustard-colored frock. Rachel McAdams and Chiwetel Ejiofor don’t get much to do as an ER doctor and fellow warrior, respectively; and Mads Mikkelsen is menacing as a baddie who looks like he just finished a bender at the discotheque. But it’s really the casting of the central role that’s the coup de grace of this time and space oddity.