When talking about the history of Necromancers in Diablo, we have to talk about the Sin War.
We don't know for certain yet, but I cannot seem to make myself imagine a Diablo 4 without Necromancers, especially since I'm fairly convinced that Rathma -- aka Linarian, the son of Lilith and Inarius, the guy who essentially created the idea of Necromancy in the Diablo universe -- seems to be the weird guy in the cinematic who summons Lilith back to Sanctuary.
Last week we talked about what you might expect to see in a Diablo 4 in terms of the story.
It's not a demon, it's not an angel, it's definitely not a Nephalem. What is Trag'Oul, and how did it come into existence?
Necromancers in Diablo are members of a sect named the Priests of Rathma.