Yeah, you can do it faster. 7 Provinces in 12 turns:
L starts with 7 Coppers, a Hovel, a Necropolis and an Overgrown Estate.
L shuffles their deck.
L draws 4 Coppers and an Overgrown Estate.
A starts with 7 Coppers, a Hovel, a Necropolis and an Overgrown Estate.
A shuffles their deck.
A draws 4 Coppers and a Hovel.
Turn 1 - Lord Rattington
L plays 4 Coppers.
L buys and gains a Fortune Teller.
L draws 3 Coppers, a Hovel and a Necropolis.
Turn 1 - Awaclus
A plays 4 Coppers.
A buys and gains a Diplomat.
A draws 3 Coppers, a Necropolis and an Overgrown Estate.
Turn 2 - Lord Rattington
L plays a Necropolis.
L plays 3 Coppers.
L buys and gains a Silver.
L shuffles their deck.
L draws 3 Coppers, a Hovel and an Overgrown Estate.
Turn 2 - Awaclus
A plays a Necropolis.
A plays 3 Coppers.
A buys and gains a Silver.
A shuffles their deck.
A draws 4 Coppers and a Necropolis.
Turn 3 - Lord Rattington
L plays 3 Coppers.
L buys and gains a Silver.
L draws 3 Coppers, a Silver and a Fortune Teller.
Turn 3 - Awaclus
A plays a Necropolis.
A plays 4 Coppers.
A buys and gains a Diplomat.
A draws 3 Coppers, a Silver and a Diplomat.
Turn 4 - Lord Rattington
L plays a Fortune Teller.
A reveals a Hovel and an Overgrown Estate.
A topdecks an Overgrown Estate.
A discards a Hovel.
L plays 3 Coppers and a Silver.
L buys and gains a Counterfeit.
L shuffles their deck.
L draws a Copper, a Silver, a Fortune Teller, a Counterfeit and a Necropolis.
Turn 4 - Awaclus
A plays 3 Coppers and a Silver.
A buys and gains a Sentry.
A shuffles their deck.
A draws a Copper, a Silver, 2 Diplomats and an Overgrown Estate.
Turn 5 - Lord Rattington
L plays a Necropolis.
L plays a Fortune Teller.
A reacts with a Diplomat.
A draws a Sentry and a Hovel.
A discards a Copper, a Hovel and an Overgrown Estate.
A reveals 6 Coppers and a Necropolis.
A shuffles their deck.
A reveals a Copper and an Overgrown Estate.
A topdecks an Overgrown Estate.
A discards 7 Coppers and a Necropolis.
L plays a Counterfeit, a Copper and a Silver.
L buys and gains a Counterfeit.
L draws 3 Coppers, a Silver and a Hovel.
Turn 5 - Awaclus
A plays a Sentry.
A draws an Overgrown Estate.
A shuffles their deck.
A reveals a Copper and a Hovel.
A trashes a Copper and a Hovel.
A plays a Diplomat.
A draws 2 Coppers.
A plays a Diplomat.
A draws a Copper and a Necropolis.
A plays a Necropolis.
A plays 3 Coppers and a Silver.
A buys and gains a Counterfeit.
A shuffles their deck.
A draws 3 Coppers, a Counterfeit and a Necropolis.
Turn 6 - Lord Rattington
L plays 3 Coppers and a Silver.
L buys and gains a Counterfeit.
L shuffles their deck.
L draws 4 Coppers and an Overgrown Estate.
Turn 6 - Awaclus
A plays a Necropolis.
A plays a Counterfeit.
A plays a Copper.
A plays a Copper again.
A trashes a Copper.
A plays 2 Coppers.
A buys and gains an Artificer.
A draws 2 Coppers, a Sentry and 2 Diplomats.
Turn 7 - Lord Rattington
L plays 4 Coppers.
L buys and gains a Silver.
L draws 2 Coppers, a Counterfeit, a Hovel and a Necropolis.
Turn 7 - Awaclus
A plays a Sentry.
A draws a Copper.
A reveals a Silver and an Overgrown Estate.
A trashes an Overgrown Estate.
A shuffles their deck.
A draws a Copper.
A topdecks a Silver.
A plays a Diplomat.
A draws a Silver and an Artificer.
A plays 4 Coppers and a Silver.
A buys and gains a Highway.
A shuffles their deck.
A draws a Copper, a Silver, a Counterfeit, a Necropolis and an Artificer.
Turn 8 - Lord Rattington
L plays a Necropolis.
L plays a Counterfeit and 2 Coppers.
L buys and gains a Silver.
L draws a Copper, 2 Silvers, a Fortune Teller and a Counterfeit.
Turn 8 - Awaclus
A plays an Artificer.
A draws a Diplomat.
A plays a Necropolis.
A plays a Diplomat.
A draws a Copper and a Highway.
A plays a Highway.
A draws a Copper.
A plays a Counterfeit.
A plays a Copper.
A plays a Copper again.
A trashes a Copper.
A plays 2 Coppers and a Silver.
A buys and gains 2 Highways.
A shuffles their deck.
A draws 2 Coppers, a Sentry, a Diplomat and a Highway.
Turn 9 - Lord Rattington
L plays a Fortune Teller.
A reacts with a Diplomat.
A draws a Copper and an Artificer.
A discards 3 Coppers.
A reveals a Copper, a Silver, a Diplomat, 2 Highways, a Counterfeit and a Necropolis.
A shuffles their deck.
A reveals 3 Coppers.
A discards 4 Coppers, a Silver, a Diplomat, 2 Highways, a Counterfeit and a Necropolis.
L plays a Counterfeit, a Copper and 2 Silvers.
L buys and gains a Province.
L shuffles their deck.
L draws a Silver, a Fortune Teller, 2 Counterfeits and a Hovel.
Turn 9 - Awaclus
A plays a Sentry.
A shuffles their deck.
A draws a Silver.
A reveals 2 Coppers.
A trashes 2 Coppers.
A plays a Diplomat.
A draws a Copper and a Diplomat.
A plays a Highway.
A draws a Counterfeit.
A plays an Artificer.
A draws a Necropolis.
A plays a Necropolis.
A plays a Diplomat.
A draws a Copper and a Highway.
A plays a Highway.
A draws a Highway.
A plays a Highway.
A plays a Counterfeit.
A plays a Copper.
A plays a Copper again.
A trashes a Copper.
A plays a Copper and a Silver.
A buys and gains 2 Artificers.
A shuffles their deck.
A draws a Sentry, a Highway, a Counterfeit and 2 Artificers.
Turn 10 - Lord Rattington
L plays a Fortune Teller.
A reveals a Copper, a Silver, 2 Diplomats, 2 Highways, a Necropolis and an Artificer.
A discards a Copper, a Silver, 2 Diplomats, 2 Highways, a Necropolis and an Artificer.
L plays 2 Counterfeits and a Silver.
L buys and gains a Counterfeit.
L draws 2 Coppers, 2 Silvers and a Counterfeit.
Turn 10 - Awaclus
A plays a Sentry.
A shuffles their deck.
A draws a Highway.
A reveals a Copper and a Diplomat.
A trashes a Copper.
A topdecks a Diplomat.
A plays a Highway.
A draws a Diplomat.
A plays a Highway.
A draws a Necropolis.
A plays an Artificer.
A draws a Diplomat.
A discards a Diplomat, a Counterfeit and a Necropolis.
A gains a Highway.
A plays a Diplomat.
A draws a Highway and an Artificer.
A plays a Highway.
A draws a Silver.
A plays an Artificer.
A draws a Highway.
A plays a Highway.
A shuffles their deck.
A draws a Diplomat.
A plays an Artificer.
A draws a Counterfeit.
A discards a Silver.
A gains an Artificer.
A plays a Diplomat.
A draws a Necropolis and an Artificer.
A plays an Artificer.
A shuffles their deck.
A draws a Silver.
A discards a Necropolis.
A gains a Highway.
A plays a Counterfeit.
A plays a Silver.
A plays a Silver again.
A trashes a Silver.
A buys and gains a Highway and an Artificer.
A shuffles their deck.
A draws a Sentry, 3 Highways and a Counterfeit.
Turn 11 - Lord Rattington
L plays a Counterfeit, 2 Coppers and 2 Silvers.
L buys and gains a Counterfeit.
L draws 2 Coppers, a Province, a Necropolis and an Overgrown Estate.
Turn 11 - Awaclus
A plays a Highway.
A draws an Artificer.
A plays a Sentry.
A draws an Artificer.
A reveals 2 Artificers.
A discards 2 Artificers.
A plays a Highway.
A draws a Necropolis.
A plays a Highway.
A draws a Highway.
A plays a Highway.
A draws a Diplomat.
A plays a Necropolis.
A plays a Diplomat.
A draws a Diplomat and a Highway.
A plays a Highway.
A draws an Artificer.
A plays an Artificer.
A draws a Highway.
A gains an Artificer.
A plays an Artificer.
A draws an Artificer.
A gains an Artificer.
A plays an Artificer.
A draws an Artificer.
A gains an Artificer.
A plays an Artificer.
A draws an Artificer.
A gains an Artificer.
A plays an Artificer.
A draws an Artificer.
A gains an Artificer.
A plays an Artificer.
A draws an Artificer.
A gains a Highway.
A plays an Artificer.
A draws a Highway.
A gains a Highway.
A plays an Artificer.
A draws a Highway.
A gains a Highway.
A plays a Highway.
A draws a Highway.
A plays a Highway.
A shuffles their deck.
A draws an Artificer.
A plays an Artificer.
A draws an Artificer.
A gains a Highway.
A plays a Highway.
A draws a Highway.
A plays a Highway.
A plays a Highway.
A plays an Artificer.
A gains a Diplomat.
A plays a Counterfeit.
A buys and gains 2 Diplomats.
A shuffles their deck.
A draws 3 Diplomats, a Highway and an Artificer.
Turn 12 - Lord Rattington
L plays a Necropolis.
L plays 2 Coppers.
L shuffles their deck.
L draws 3 Coppers, a Silver and a Province.
Turn 12 - Awaclus
A plays a Highway.
A draws a Diplomat.
A plays an Artificer.
A draws an Artificer.
A discards 2 Diplomats and an Artificer.
A gains a Diplomat.
A plays a Diplomat.
A draws a Diplomat and a Highway.
A plays a Highway.
A draws a Highway.
A plays a Highway.
A draws a Sentry.
A plays a Sentry.
A draws an Artificer.
A reveals a Highway and an Artificer.
A discards an Artificer.
A topdecks a Highway.
A plays a Diplomat.
A draws a Highway and an Artificer.
A plays a Highway.
A draws a Counterfeit.
A plays a Diplomat.
A draws a Highway and a Necropolis.
A plays a Highway.
A draws an Artificer.
A plays an Artificer.
A draws a Highway.
A plays a Highway.
A draws a Highway.
A plays a Highway.
A draws an Artificer.
A plays an Artificer.
A draws an Artificer.
A discards a Necropolis.
A gains a Province.
A plays an Artificer.
A draws a Province.
A gains a Diplomat.
A plays an Artificer.
A draws a Diplomat.
A discards a Province.
A gains a Province.
A plays a Diplomat.
A draws a Province and a Diplomat.
A plays a Diplomat.
A draws 2 Highways.
A plays a Highway.
A draws an Artificer.
A plays a Highway.
A draws an Artificer.
A plays an Artificer.
A draws a Highway.
A gains a Province.
A plays an Artificer.
A draws a Province.
A gains a Province.
A plays an Artificer.
A draws a Province.
A gains a Province.
A plays a Highway.
A draws a Province.
A plays a Counterfeit.
A buys and gains 2 Provinces.
A shuffles their deck.
A draws 2 Provinces and 3 Artificers.
Not that it matters all that much though, but it's a very fun board to play.