doctor doesn't work - you can only trash cards in your deck/discard, so only 5 cards.
I believe that the correct opening is Border village - nomad camp - border village - sir martin - herald putting NC-BV-Sir Martin on top of your deck.
Or maybe just BV-NC-colony-BV-squire.
well, with possession you aren't quite guarranteed to have your potion on T3. but the above isn't guarranteed either...
This should end up a bit of rock-paper-scissors.