In the following save game, http://dl.dropbox.com/u/5057853/3c_mastery/mastery.EleSav , I have all ending enabled and can do all endings: There is only Altar left, and I can make an alliance with him. I have all pieces of the master quest and I have also researched the spell of making.
Sadly, when I cast the spell of making on a green tile (the spell has a range of 1), the game doesn't end.
