Hm, ambassador/KC vs Trader/hoard sounds like a distant possibility.
Basically, the amb/KC player just wants to flood the other player's deck with copper (and probably curse).
The hoard/trader player just tries to defend, while greening reasonably well (eventually trashing gold on trader to drown his green, coppers and curses in silver).
The only danger I see is the curse pile emptying before the third treasure pile does.
Mind you, you could replace amb/KC by trasher/mountebank/KC, though again, the curses will empty out before the coppers. Maybe trasher/jester/KC?