Mighty Avengers by Brian Michael Bendis: The Complete Collection #1

With many of Earth's heroes registered with the government, Iron Man and Ms. Marvel pick the cream of the crop for a new team of Avengers. Fourteen minutes after the team is put together, the Mighty Avengers swing into action as monsters begin to attack New York. The Mole Man arrives, screaming that his underworld domain has been attacked, but the Avengers have little time to process this information as a mysterious female falls to Earth claiming to be Ultron.