Benedict Cumberbatch has transformed into Doctor Strange. In a second trailer, released Saturday night at San Diego Comic-Con, the star of the trippy Marvel film finally seems to be mastering the magical arts. We see him training and, more importantly, putting on the red cape and beginning to employ his powers. The trailer also offers an introduction to Mads Mikkelsen’s Kaecilius, who says simply, “I am death.” On the panel, Mikkelsen said that his character thinks he’s in the right. Tilda Swinton also talked about her character, The Ancient One.