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Here's a continuation of the story. In the first chapter, Tarnum eliminates his neighbors and becomes the master of the Necropolis (I also suggest making Tarnum a Necromancer from the very beginning). The Necromancers learn that another Necromancer is developing a Necropolis and bringing nearby castles under his control. This unfamiliar, but promising, Necromancer also accepts an expedition in his castle, where he later asks to join his army, regardless of its objective. The Necromancers don't reveal the secret of the hidden tomb to Tarnum, but they are interested in gaining a strong ally, so they give him the task of capturing the nearest castle of mages. The mages might detect the expedition, but an attack by Tarnum's troops will appear as a regular invasion and, regardless of the outcome, will distract the mages from the expedition. This offers some "cannon fodder." Overall, the scenario is quite wild. Maybe that's a good thing... ;)
Also, no text here. Just a rough draft of the map.