Dynasties

Yes, I checked, and weapons from the Dynasty appear, but you need to restart the game a lot. I got the Blade of Chaos, the Kirin Silk Sword, and the Batu Totem, which I didn't have before. Most likely, when creating the map, a random artifact of any level was placed here, and artifacts from the Dynasty were included in that range. There are probably many such places in the campaigns, it's just that this one is close to the beginning of the mission, so it was noticed.