Another draft:
I first picked a Dragonshift (probably not correct, but I really wanted to play with that card), followed by two guildgates, since there were no clear signals in the packs and I really wanted to try a multicolor deck.
I got a fourth pick Far and Away (don't know what people picked over it, but it must've been the best pack ever?) and picked up a few gatekeepers.
I picked up some more random stuff, not really settling on any color combination but keeping multiple options open.
Then in RTR the Rakdos came flowing and it knitted the deck together. This the result:
Some nice removal, good curve and some really great cards so I felt okay.
I tried to submit but it wouldn't work... Had to log out, log back in and when I came back I had 30 seconds to completely rebuild my deck!

This the result. 41 cards, but I really didn't have tome to check (was already glad it wasn't 39...) If I had the time I would cut either Way of the Thief or the Thunderfist, probably the former.
So... things worked out.
With a beating heart I looked at my first hand... 1 land.
Mulligan... 1 land...
Mull into a hand with 2 mountains and some black stuff... had to keep.
I took me a few turns before I found a third land and I finally had a defensive Hellhole Flailer up on turn 5. Trading happened, but I found another land and got an Ubul Sar Gatekeepers to stabilize at 4 life.
Here I believe my opponent started drawing marginally, and I was going perfectly. Got a Bane Alley Broker going and eventually buried my opponent in card advantage.
Game 2 was also a double mulligan but I had an aggressive draw (and the right amount of mana), and beat him without too much of a hassle.
Alright... a failed deck submission, four mulligans... the magic gods weren't with me. Time for round 2 then.
I played against a UWb deck, I don't remember the specifics, but I beat him with better cards.
Game 2 I kept a hand with five lands and two expensive spells. I figured I had pretty good odds of getting out of that one.
Sadly I drew lots of lands and when he got his Scion of Vitu-Ghazi online I could only watch as the birds were soaring over my head and killing me.
Game 3 was the big one. I had a good start and the game was very tense. For each threat from one of us there was an answer from the other. He again got his Scion online and had a big army of birds.
I had many aggressive creatures and eventually it came down to him having lethal flyers in play and on 1 life, versus me with a few creatures and needing one of 3 to 5 outs (not sure how many exactly). I drew a swamp and had to accept the final beats.
So all in all I got unlucky a few times but as far as I can tell played pretty well. The strategy of staying open by picking lots of gates is pretty powerful and I will soon try it again.