A long time ago, I played a map, size XL, a "Heroes of Might and Magic" map. You start playing in the Dungeon faction, on an island. I don't remember the castle, but it had a non-standard set of creatures; I think you could hire Sorceresses in it, and there were also several Sorceress dwellings on the island. When you start sailing from the island, you also encounter their dwellings...
That's probably all I remember. I never finished the map. Maybe someone else played it and can tell me the name?