Hazar
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I discovered a bug:
If you start a map, then exit to the menu and start another one, artifacts are somehow strangely transferred between identical heroes.
Here are a couple of examples:
1) Start The Last Crusade, then Metataxer's Revenge. We get Vertigo like this:
..
2) Start Metataxer's Revenge, then Heroes of Jin Yong. The starting hero has the Vessel of Life from Friend from Metataxer:
..
3) The Last Crusade, then Jedi Strikes Back - Cielke gets a magic book in her inventory from Cielke from TLC.
P.S. sod_sp has nothing to do with this (tested without it too)
Then why not just immediately make the necessary dummy map with the required heroes and artifacts? Why complicate things by searching for "suitable" scenarios? 
Just to make sure success is inevitable