You should not speak of Nagash's plans. The Mortal Realms are still being contested, and the Grand Configuration has not yet reached fruition. You imperil all that the Mortarchs have fought for, and bring curses upon us all.
The Dark Lord spits on your lizardmen! At the last Games Workshop shareholders meeting they were dismissed as a low sales line! They don't even have an Army Book! But right now Little Timmy is throwing tantrums for the Undead, and his parents WILL buy him a horde of skeletons!