Can someone explain the strategy in plain English? I remember reading this thread when I was new to Dominion and not having any idea what was going on. I just re-read it, and I think I understand most of the important parts, but I still don't think I got everything.
Here's my attempt at explaining:
1. He starts out by using processions to play actions twice and gain new cards. He trashes fortresses because then they come back to his hand (even after playing them due to procession), and he trashes catacombs to gain cheaper cards. Often when gaining a card, he will immediately trash it using watchtower to trigger an effect (or just use watchtower to topdeck the card).
2. At this point he plays all 10 hagglers. Normally you wouldn't be able to alternate back and forth between the action & buy phases of your turn, but he uses black market to get around this. Each time he buys a card from the black market deck, he gains 10 cheaper cards due to the hagglers, and he can continue to play actions afterwards.
3. He gains & plays all 10 goons so that every buy from here on out also nets him 10 victory points.
4. He repeats the step 2 black market strategy, but this time using king's court to supercharge everything.
5. Finally, he plays all his treasure (including a bank worth $76) and buys all the remaining cards (only victory and treasure cards were left at this point).
Can anyone else give a better/clearer/more accurate explanation than that?