Question regarding Tamurkhan/NURGLE and the Champions of Chaos DLC

Hey guys, I bought the thrones of decay as I really wanted to play Tamurkhan. His starting army includes 2 units of Chaos Warriors of Nurgle (Great Weapons).

I looked through the military buildings and I couldn't find this unit. This led me to research a bit and apparently I cannot get this without yet another DLC - Champions of DLC - is this correct? Does this also mean that without this DLC, I cannot get Aspiring Champions as Tamurkhan?

If so this is an absolute pisstake, even Todd Howard wouldn't even be this greedy lol.

It'd be akin to buying a new horse in elder scrolls via DLC and then the horse armor separately via another DLC, lol.