Yes. Creating everything (but Sonya) in the computer is the only way to guarantee the illusion of one continuous amazing shot. You need a digitally created exterior Outworld environment, the Black Tower (which you already have) and an exact computer replica of the live action set of the Black Tower's interior. You shoot Sonya against a greenscreen and then replace the green with the inside of the tower. A lot of work, but in this case well worth it. You've created a dynamic, sweeping view of an imaginary place. Amazing!
