While comic book adaptations don't always accurately represent the movies they're based on, the "Doctor Strange" prequel comic offers a lot of reveals that seem very plausible for the upcoming Marvel Studios film starring Benedict Cumberbatch as the Sorcerer Supreme.
The issue follows the pursuit of a woman who bears the Eye of Agamotto, and all its incredible supernatural power. Deemed unworthy to hold the power of the device, the Masters of Mystic Arts come after her to reclaim the weapon. This indicates that Cumberbatch's Stephen Strange isn't the first to use the Eye of Agamotto, and was in fact preceded by someone who abused the power.
Some viewers suspect that the Eye of Agamotto is one of the Infinity Stones of the Marvel Cinematic Universe -- the Time Stone in particular. Based on the depiction of the weapon in the comics, it seems an awful lot like Loki's scepter, which turned out to be one of the Infinity Stones -- the Space Stone.
Additionally, the issue depicts four Masters of Mystic Arts: Kaecilius, Wong, Tina Minoru and Daniel Drumm.
In the comics, Drumm is the equally-supernatural sibling of Brother Voodoo, and at one point fought the Avengers. Despite his antagonistic role in the source material, it looks like Drumm will be a good guy in the film. Same goes for Wong and Tina Minoru, who have supernatural powers in the comics, but are full-on Masters of Mystic Arts in the prequel comic.
As for Kaecilius, he's the character Mads Mikkelsen is rumored to be playing in the film. Some reports suggested that Mikkelsen would turn out to be a villain in the film. While the comic depicts him as a good guy, there's a real attitude to Kaecilius that could suggest a villainous turn down the road...
By the end of the prequel comic, the four Masters of Mystic Arts safely reclaim the Eye of Agamotto, and keep it encassed behind glass in the Sanctum Sanctorum -- suggesting a future bearer who will use the power for better purposes. Perhaps Stephen Strange is the candidate they're looking for...?
Directed by Scott Derrickson, written by C. Robert Cargill and Jon Spaihts, and starring Benedict Cumberbatch, Rachel McAdams, Tilda Swinton, Mads Mikkelsen, Chiwetel Ejiofor and others, "Doctor Strange" hits theaters on November 4, 2016.