Tomorrow, the biggest crossover event in the history of the CW Arrowverse will draw to a close, but before it happens, the network is giving us a couple of little sneak peeks at Lex Luthor, The Monitor, and our heroes as they prepare for their greatest battle. Who will live? Probably most of them. Who will die? Probably Oliver (at least technically). All the truths will be laid bare Tuesday, January 14th, at 8 PM.