July 2012: Mongul, Wonder Woman, Batman
August 2012: Future Static, Aqueagirl, Micron
September 2012: Vandal Savage, Future Superman, Batman
October 2012: Guy Gardner, Martian Manhunter, Batman
November 2012: Blue Beetle, Fire, Booster Gold
December 2012: Toyman, Firefly, Dr. Destiny.
Thanks to Mental Power for posting this list a few months ago.
BTW, you have asked this question before, and in the same thread I found this info, lol.