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"Knull's invasion tests Earth's Mightiest Heroes to their limits! T'Challa's most treasured allies have been lost - and once again, the Black Panther must choose between his role as a king and the yearnings of his heart! Captain America, aided by the Falcon and the Winter Soldier, faces a brutal battle against darkness! Knull raises fresh hell for Ghost Rider! Joe Fixit is out to make sure this is the best holiday the Hulk's ever had - he just has to fight his way through a planet of symbiotes first! Iron Man and Doctor Doom are forced together to battle an all-too-familiar specter of the festive season! And on vacation in the Shi'ar galaxy, newlyweds Wiccan and Hulkling face a honeymoon to die for!"