The Montaigne
"Your mother was a hamster and your father smelt of elderberries"
Montaigne are in my opinion the most powerful faction, with the ability to deal out obscene ammounts of cannon from the word go and also they are quite proficient at boardings. If you wish to plan a cannon deck then they are more then capable of dishing out a 20 pound cannon volley as their first action. Simply pack you deck with cannon increasing cards (ie: target their powder room, crescent fire etc) and start with Fierbas and Isabeau. That way you can move into their see and fire pretty much regardless of where they are. This doesn't make for a very fun deck but is incredibly effective. I find Montaigne boarding decks are great fun. And with the addition of Dispatching the Scum they can kill off any opponent with out the need of swashbuckling increasing adventures.
Key cards:
Cannon: Fierbas, Cresent Fire, 16 & 20 pound cannon volleys, "Target
Their Powder Room!!", Pepin, the General, Grenouile De Grace.
Boarding: Babette, Ambroise, Viveanne, Dispatching the Scum, Porte
Ward, Disarmed, Montaigne Puzzle Sword and Gerard. Use the General on
either
Le Predator du Mers or Fair Weather Friend.