This past Saturday, I played at a Magic card tournament. It was a "Block Party" tournament, meaning you could play any deck composed of cards from a single expansion set... excluding banned cards (more on this later.)
Before I get into the event, let me share my preparation with you guys. Odyssey block U/G Madness was my top choice with Urza's block Accelerated Blue being my second, courtesy of Hi-Val
http://www.themanadrain.com/index.php?topic=30700.0 thanks Hi-Val. Anyways here were my 2 choices:
Odyssey U/G Madness 1.3Mana
12 Island
10 Forsest
2 Tarnished Citadel
Creatures4 Basing Rootwalla
4 Wild Mongrel
4 Aquamoeba
4 Arrogant Wurm
4 Roar of the Wurm
3 Wonder
Card Manipulation3 Quiet Speculation
2 Deep Analysis
4 Careful Study
Counters4 Circular Logic
Sideboard4 StupifyingTouch
3 Turbulent Dreams
3 Ray of Revelation
2 Deep Analysis
1 Krosan Reclamation
1 Quiet Speculation
1 Wonder
The SB Wonder was there for Skies/Waters.
Urza's Accelerated Blue 1.2Spells3 Masticore
3 Morphling
4 Power Sink
4 Grim Monolith
4 Miscalculation
4 Powder Keg
4 Stroke of Genius
4 Rewind
4 Treachery
Land18 Island
4 Remote Isle
4 Blasted Landscape
Sideboard4 Hibernation
3 Palinchron
3 Douse
2 Annul
2 Scrying Glass
1 Masticore
Hibernation was there for my U/G Madness' Wurms and Mongrels. Palinchron was there for Odyssey block Mono Black Control (Innocent Blood, Chainers Edit, etc.) I decided on U/G Madness as it was more consistent and heck, it's good enough to win a legacy tournament. Accelerated Blue can't say that!
There was a modest turnout (6 players) and I eventually discovered what all of them were playing except for one random dude. On with the tourney:
In Round 1, I play my toughest match of the day: Some Urza's U/B 187 Bounce deck. He stole my creatures with Gilded Drake and Snapped them back to his his hand. It looked pretty janky but it worked to an extent (except for his Cloud of Faries, they were straight up awful, lol.) I won game 1 due to attrition b/c of the brokeness Quiet Speculation, Roar of the Wurm, and Deep Analysis while his combo only showed up some of the time. I boarded out 1 Wonder, 1 Quiet Speculation and 1 Deep Analysis for 3 Turbulent Dreams to deal with Gilded Drake. I notice that he sideboards a lot so i'm kind of worried... In game 2 he plays a Bone Shredder! And bounces that to his hand several times. But he stops drawing Snaps or Bone Shredders and all of his 4 lands are too tied up cycling with some Urza block blue enchantment for him to keep up with my tempo. He did Eradicate my Basking Rootwalla and Quash my Circular Logic but it wasn't enough. Also I never drew my Turbulent Dreams and I never saw a Gilded Drake.
After the match he told me he considered playing U/G Madness but he didn't have a sideboard for it, unlike his U/B 187 deck. He then showed his his "U/G Madness" but it was actually more of a U/G Threshold that didn't run Nimble Mongoose for some reason.
games: 2-0
matches: 1-0
In round 2, I play an underpowered Mirage Sligh deck. Suq Ata Lancer and Lava Hounds were the only decent creatures in his deck. I even Circular Logiced his 4th turn Lava Hounds to prevent him from taking 4 damage. See how nice I am

After winning game 1, I didn't sideboard. In the second game I kept attacking with with early drops until he played a Bloodrock Cyclops. That's the only turn I didn't attack since it wasn't worth trading when I was winning the damage race and all he had was a 3/3 that had to attack. Next turn he played a hasty Talruum Minotaur as a blocker so I decided to run him over with all my guys and finish him off, no problem.
games: 2-0
matches: 2-0
So now i'm in the finals and I know from the ending of the previous round that my opponent was playing Cursed Scroll, a card that is banned from Tempest block. I inform him that according to the official DCI rules, his deck is illegal and give him the option of taking them out and either playing a 56 card deck or presideboarding against me. Well this fool refuses my offer and insists on playing with the illegal cards or not playing at all. So I call the judge over. They look up the Block Format Deck Construction rules online and rule in my favor. So basically i'm right and he's wrong and his comeback is "You must really want to win." Yeah, I wanted to win so much, I added banned cards to my deck! Stupid hypocrite. So he forefeits and I win the tournament. Personally I feel that if he were any kind of man, he'd play against me anyway, admit he was wrong and apologize to everyone he beat that day because he cheated against them all.
games: 2-0 (obviously b/c he wouldn't play me)
matches: 3-0
The cheater ran a Tempest Mono-White Weenie deck. Another guy ran Urza's Stompy. I didn't get to see what the last person ran but I guess it didn't matter as he didn't place high enough to play me anyways.