A PPTQ is a Preliminary Pro Tour Qualifier (for magic the gathering). I've not won one before, but I came as close as I ever have this last weekend. I did it playing this deck http://tappedout.net/mtg-decks/24-03-16-4-color-eldrazi/ . It was a 33 person tournament (6 rounds) I ended up losing the semi finals to a rally deck. Rally the Ancestors has pretty much dominated the tournaments in standard at least locally. Though based on mtgtop8.com it seems to be a thing in other places too.
It uses either Zulaport Cutthroat triggers or an unblocked Nantuko Husk to win. Usually the former in my experience. I tried to prepare for it using hallowed moonlight (which is also good against other things) and a single cranial archive which would force them to reshuffle their graveyard (making the rally worthless) but it wasnt enough. In the end I neglected to always leave my 2 mana open to trigger cranial and lost on a top deck rally. Game one they won as they tend to do without my sideboard.
This leads me to possibly a better solution. I think I'll be trying tainted remedy next time. For the rally match up it should work wonders as they don't run enchantment removal. Most of the time when they start trying to win with the cutthroat they have less life than I do and in short it would kill them. I'll have it as a 2 of in the sideboard somewhere. It's also worth mentioning, it will also would help against any decks running normal life gain monsters like seeker of the way or soulfire grand master. Not that we see a lot of those these days.
On a final note concerning the two planeswalkers I ran. The unsung hero of my deck was Sorin, Solemn Visitor. He pulled his weight more than you would expect, i got paired against two prowess decks and he got me through both matches. As far as Gideon, Ally of Zendikar goes, he's been underwhelming as of late. I think that has more to do with the prevalence of dragons and rally in the format. Both decks try to win in a way that make him more or less a non issue.