Band of Misfits would be pretty strong here.
Especially since it can only copy things that haven't run out in the supply. So maybe a more interesting variant would be, you start out with 5 bands of misfits and nothing else, with one of every card in the supply. That way there's not a swingy rush on them. Both players get to figure out how to play it, but buying a card would lock it out from the other player- but also lock yourself to only playing the one copy, and diluting your super-flexible deck.
I'd probably start with.. ironworks, ironworks (gaining bridge and throne room), fishing villiage, nomad camp, smithy (drawing bridge and throne room), throne room bridge. With 5 money, 3 buys, 2 less cost, I'd buy king's court.
Or... (bom)Ironworks bridge
(bom) worker's villiage drawing bridge
(bom) throne room the bridge
(bom) throne room a (bom) ironworks
.....
Screw it, here's your puzzle. Can you gain and play a king's court with something useful on the first turn of this game?