Marvel Comics March 2013 (W) Peter David (A) Leonard Kirk (CA) David Yardin A year of X-FACTOR stories culminates here in the first part of 'HELL ON EARTH WAR'! The various Hell lords battle for domination in a war that was triggered by the seven billionth soul born on Earth, and only X-Factor can avoid the entire world going up in flames! This is the beginning of the end for X-Factor as you know it…