The Diacide Wars

The Diacide War is a reoccurring event that comes at the end of each cycle of the universe. During this war all Celestial,Infernal,Primal and Elemental beings both high and lowly battle it out for supremacy within the universe at large the war normally begins during the last 5,000 years of each cycle and its victors are carried over into the next cycle in which they will be those that start up the next cycle by creating the new world.
Regardless of the outcome of each war there will be only twelve survivors. If after the war there is more then twelve survivors there will be something called the Culling to lower the number to twelve