I'm currently writing a story where the antagonist starts a civil war to overthrow the present ruling order. I need to ask, what would be powerful enough to cause people to start a civil war? I've considered a magical explosive going off in a government building but perhaps that might not be enough to cause a full blown magical civil war. Help anyone? The ruling classes there are two fractions Mages and Common(warriors, blacksmiths) people but the ruling order is neutral and the antagonist is a mage.