The Asgard/Shi’Ar War Begins in THE MIGHTY THOR #15! New York, NY—December 12th, 2016 —Kick 2017 off with a bang as two Marvel Universe mainstays go to war – and shake the cosmos! Today, Marvel is pleased to present your first look at THE MIGHTY THOR #15 – the first chapter of the “Asgard/Shi’ar War”! Chartbusting creators…