Fans in attendance also caught new footage of Doctor Doom’s battle against the X-Men, offering a glimpse of the character in action ahead of the movie’s December premiere. Closer look at Doctor Doom's magical book in ‘AVENGERS: DOOMSDAY’. That level of detail has fueled speculation among fans about just how central Doom’s magical capabilities, including whatever role the mysterious book plays, will be to the film’s central conflict. Those reveals gave fans their first extended look at how several X-Men characters will appear alongside Doom in the film’s ensemble. What role do you think Doctor Doom’s mysterious magical book will play in Avengers: Doomsday?