Necromancer – “Invasion” [Campaign 3, Mission 3]

:mad: I captured all the castles, killed everyone, but they still didn't give me the staff, and I didn't curse a single city; they all belong to me, but they won't let me into the Dungeon without the staff. I even went there with dragons, but it says I need to collect artifacts. Damn it, the task says the staff will appear when I capture the city of ZIAD, and I captured it, but the staff didn't appear. I don't even know what to do; I've been trying for so long =((( But they gave me the cloak right away. What a bummer.