Three-card combos are always a little niche - the odds of seeing three cards in combination is pretty low. Which makes reading about them a lot less interesting than powerful 2-card combos which you will often see again and again.
That said, I couldn't resist showing this one.
Salvager / Peddler is a well-known 2-card combo (I'm sure someone can figure out how to link to it below). I just played a game where it was facilitated massively by Tactician.
I got the combo going by turn 8. Then the double Tactician by turn 11.
Every turn would look like this:
Draw 5 cards (plus more due to Caravan thrown in)
Play Cantrips, holding a single Peddler back
Salvager Peddler
Play Tactician
Buy a Province and two Peddlers
Repeat.
On turn 15 I purchased my 7th province.
I'll bet if I saw the combo faster It would be able to pull off 8 provinces even faster.
Again, 3-card combos are not particularly interesting, but this one sure was fun!
Here's the log:
http://dominion.isotropic.org/gamelog/201204/03/game-20120403-173028-ebd3643e.htmlEDIT:
I just played a solitaire game to see how fast I could win it. I discovered it doesn't work without a good cantrip card (like Caravan). I think any cantrip would work, but I tried it with only Ironworks and Conspirator available and it failed pretty badly.
EDIT 2:
Just tried it with a village - and it works even better. The extra actions allow you to salvage more then one peddler a turn. Here's a solo game log:
http://dominion.isotropic.org/gamelog/201204/03/game-20120403-174936-397711c0.html
