3 turns, 110 VP (or more).Post is flawed. Disregard.
EDIT: Back to the drawing board. I used too many buys at the very beginning of turn 3. Arrrgh.
Kingdom
Options
Shelters, Platinum/Colony
Events
Alms
Ball
Travelling Fair
Actions
Baker
Bridge
Cultist
King's Court
Squire
Stonemason
Villa
Watchtower
(works with 2/5 or 3/4 opening because of Baker; shown here with 3/4)
Turn 1
3 Copper
Buy Watchtower
Turn 2
4 Copper + coin token
Buy Ball, gain Bridge x 2
Turn 3 draw Bridge x 2, Necropolis, Watchtower, Copper
Play Necropolis, Bridge, Bridge
Buy Bridge, reveal Watchtower, topdeck Bridge
(Watchtower stays in hand. I'll just note (trash) or (topdeck) after each gain.)
Buy Squire (topdeck)
Buy Squire (trash), gain Cultist (trash), draw Squire, Bridge, Copper
Buy Alms, gain Villa (in hand)
Turn 3.1
Play Villa, Bridge (now 2 buys, 2 coins, and cards cost 3 less)
Buy Stonemason (trash), overpay by 1, gain Bridge (topdeck), gain Bridge (topdeck)
Buy Stonemason (trash), overpay by 1, gain Bridge (topdeck), gain Villa (in hand)
Turn 3.2
Play Villa, Squire (for +2 buys) (now 3 buys, 2 coin, and cards cost 3 less)
Buy Squire (topdeck)
Buy Squire (trash), gain Cultist (trash), draw Squire, Bridge x 2
Buy Villa
Turn 3.3
Play Villa, Bridge, Squire (for +2 buys), Copper x 2 (now 4 buys, 5 coin, and cards cost 4 less)
Buy Travelling Fair (now 5 buys, 3 coin, and cards cost 4 less)
Buy Stonemason (trash), overpay by 3, gain King's Court x 2 (topdeck)
Buy Squire (topdeck)
Buy Squire (trash), gain Cultist (trash), draw Squire, King's Court x 2
Buy Squire (trash), gain Cultist (trash), draw Bridge, Copper x 2
Buy Villa
Turn 3.4
Play Villa, KC-KC-Bridge-Bridge-Squire(+2buys), Copper x 2
13 buys, 12 coins, and cards cost 10 less.
Buy Colony x 8, Province x 5 for 110 VP.
I could have gone another iteration or two and emptied the entire kingdom, but you get the point.
I'm working on a version that can yield infinite VP.
To do that, one must retrieve a lot of cards from the trash, draw them, play them, including one Monument or other VP gainer, then in the buy phase, use Bonfire to trash all cards in play and then buy a Villa.
Infinite loop. You never run out of cards to play and your turn never ends.
See the posts by florrat and others here:
http://forum.dominionstrategy.com/index.php?topic=15366.0This will necessitate a slightly different approach since Rogue and Graverobber can only retrieve cards costing 3 to 6 coins.