I really like King's Courting or Throne Rooming Feast. It's a fun non-obvious combo.
In this set the only +buy was Woodcutter, the only +actions was Nobles, the only source of trashing was Masq, and the only +$ action card was Cutpurse (in addition to Woodcutter). And we needed to get to KC fast. Which means in the end game we were both short +buy (since we didn't want to pick up Woodcutters early). Both of us ended up using big $ hands to buy Woodcutters (and second big dollar hands to pick up second Woodcutters).
But the real thing I'm proud of is picking up Feast on my second last turn. It let me do this on my last turn:
http://dominion.isotropic.org/gamelog/201301/29/game-20130129-134431-8b519897.html — ednever's turn 16 —
ednever plays a King's Court.
... and plays a King's Court.
... ... and plays a Nobles.
... ... ... drawing 3 cards.
... ... and plays the Nobles again.
... ... ... drawing 3 cards.
... ... and plays the Nobles a third time.
... ... ... (ednever reshuffles.)
... ... ... drawing 3 cards.
... and plays the King's Court again.
... ... and plays a King's Court.
... ... ... and plays a Nobles.
... ... ... ... drawing 3 cards.
... ... ... and plays the Nobles again.
... ... ... ... getting +2 actions.
... ... ... and plays the Nobles a third time.
... ... ... ... getting +2 actions.
... ... and plays the King's Court again.
... ... ... and plays a King's Court.
... ... ... ... and plays a Feast.
... ... ... ... ... trashing the Feast.
... ... ... ... ... gaining a Woodcutter.
... ... ... ... and plays the Feast again.
... ... ... ... ... gaining a Woodcutter.
... ... ... ... and plays the Feast a third time.
... ... ... ... ... gaining a Woodcutter.
... ... ... and plays the King's Court again.
... ... ... ... and plays a Nobles.
... ... ... ... ... (ednever reshuffles.)
... ... ... ... ... drawing 3 cards.
... ... ... ... and plays the Nobles again.
... ... ... ... ... drawing 1 card.
... ... ... ... and plays the Nobles a third time.
... ... ... ... ... getting +2 actions.
... ... ... and plays the King's Court a third time.
... ... ... ... and plays a Woodcutter.
... ... ... ... ... getting +1 buy and +$2.
... ... ... ... and plays the Woodcutter again.
... ... ... ... ... getting +1 buy and +$2.
... ... ... ... and plays the Woodcutter a third time.
... ... ... ... ... getting +1 buy and +$2.
... ... and plays the King's Court a third time.
... ... ... and plays a Woodcutter.
... ... ... ... getting +1 buy and +$2.
... ... ... and plays the Woodcutter again.
... ... ... ... getting +1 buy and +$2.
... ... ... and plays the Woodcutter a third time.
... ... ... ... getting +1 buy and +$2.
... and plays the King's Court a third time.
... ... and plays a Woodcutter.
... ... ... getting +1 buy and +$2.
... ... and plays the Woodcutter again.
... ... ... getting +1 buy and +$2.
... ... and plays the Woodcutter a third time.
... ... ... getting +1 buy and +$2.
ednever plays a Woodcutter.
... getting +1 buy and +$2.
ednever plays a Woodcutter.
... getting +1 buy and +$2. ednever plays 2 Coppers and 3 Silvers.
ednever buys a King's Court.
ednever buys a King's Court.
ednever buys a Woodcutter.
ednever buys a Woodcutter.
ednever buys a Province.
ednever buys an Estate.
(ednever reshuffles.)
(ednever draws: 2 King's Courts, 2 Woodcutters, and a Nobles.)
Giving me enough cash and buys to buy the last two King's Courts, the rest of the Woodcutters and a Province for the win.
Going from $14 buys of Woodcutters to emptying two piles for a mega-turn is a ton of fun!
Ed