Necromancer Starting from Pact Raven

On the battlefield of all races, the Skeleton King sits on the throne, the death knight charges bravely, the flesh and blood giant sweeps across the battlefield, and the ghost warlords roam the battlefield... And they are just the creation of an experiment conducted by a certain necromancer... Many years later, when the humans of Blue Star were in dire straits on the battlefield of all races, and a certain Gogo God who had already become a god had to take action, people saw what a real natural disaster was!