yeah... I tried so many options... it turns out that if you use the "Dismiss-Buyout" bug, the movement range increases... he has just enough movement (provided the gold is collected)... but that's not allowed ;);)
and I completely forgot to mention the ships - I didn't even pay attention to them... about the creature pen - that's obvious, I put: ZD, 11 Pit Lords, gremlins, and all sorts of creatures from the Dungeon, etc. =))
but I still didn't score enough(( ='((

I think you need to somehow play with the oases so that someone can reach them... but how, because the nearest portal from the castle is quite far away... and there wouldn't be enough movement (or am I wrong) =))