The list I played was the following:
2 Underground Sea
3 Polluted Delta
4 Flooded Strand
2 Tundra
1 Island
1 Plains
1 Marsh Flats
1 Misty Rainforest
4 Dark Ritual
3 Cabal Ritual
4 Lotus Petal
2 Chrome Mox
4 Lion's Eye Diamond
4 Infernal Tutor
1 Tendrils of Agony
2 Ad Nauseam
3 Orim's Chant
4 Silence
1 Ill-Gotten Gains
3 Gitaxian Probe
2 Preordain
4 Brainstorm
4 Ponder
SB:
2 Chain of Vapor
2 Echoing Truth
3 Dread of Night
3 Extirpate
4 Xantid Swarm
1 Tropical Island
I was quite happy about the way the list worked out. The one thing I would probably change is adding one more G. Probe to the maindeck in favor of a land but that is pretty much it.
The idea was to have a stable mana base and a decent matchup against both the T1 decks (Maverick/reanimator/RUG..) as well as against the "random" decks. The reason for this is because I didn't have any byes going in the tournament.
My record for day 1 was 7-2 and for day 2 (unfortunately) 1-2 drop. The reason for the bad record day 2 was the fact that I had to play totaly sleep deprived day 2 and made mistakes because of it. (apparently getting any sleep is quite necessary when playing a magic tournament

)
Anyway, I played the following matchups day 1:
R1: Blue zoo W (2-0)
R2: Counterbalance W (2-1)
R3: Esper Blade W (2-1)
R4: Omnisience combo L (1-2) lost this one to a topdecked omniscience when I had a certain kill the next turn..

R5: Hive Mind W (2-1)
R6: Esper Blade W (2-0)
R7: Dredge W (2-0)
R8: Reanimator L (1-2)
R9: RUG W (2-0)
Day 2
R10: Maverick W (2-0)
R11: Show and Tell L (0-2) (Guy who made top 8)
R12: Merfolks L 1-2 drop
I should always have won the merfolk matchup but lost due to my own fault...oh..well..
All in all I was very happy with the way the deck worked (certainly considering the matchups day 1) and was quite bummed out to scrub out because of sleep deprivision. Luckily I saw my favourite deck win it all

.
If you have any questions about the list, feel free to ask.