The exact date of the beginning of the mage wars has been lost to time. We know that they began slowly at first. Minor tensions leading to open hostility between a pair of the magocracies. Which pair that was is a point of much debate. There is no definitive proof. However we do know that, in the space of a decade 2 became 8 and everyone was fighting everyone else and as a result, the disc will never be the same again.