I just went T5 Grave Titan -> T6 Hornet Queen -> T7 Craterhoof Behemoth. Wall of Roots blocking like a champ, and Murderous Cut doing work to get me there since I found the Queen off of a Tracker's Instincts.
I love cube.
EDIT: Game two, my opponent curves Kami of Ancient Law into Courser of Kruphix into Obstinate Baloth. I played Llanowar Elves, Overgrown Battlement, Sylvan Caryatid, then Wall of Roots and Hornet Queen together on Turn 4. Turn five Liliana Vess, go fetch Craterhoof. Welcome to Cube, buddy.
EDIT2: I guess I got to go to school in the second match. I had to mulligan a hand of all lands in the first game, and a Thoughtseize stripped my only threat from the six-card hand and I drew air for the rest of the match. Game two I had a sick hand that could spit out a T3 Grave Titan, but got hit with T1 Thoughtseize into T2 Hymn to Tourach, and despite managing to come back and build a superior board, my opponent had an Ashiok go unchecked for long enough to mill me out thanks to him targeting me with Deep Analysis and Compulsive Researches on the final turn.
Mini-rant: Generally I think Thoughtseize is an extremely poor choice for a Cube deck, because you can only put one in your deck and it gets exponentially worse as the game goes long. The exception is reanimator; I'll sometimes play it in that deck because in a pinch it can also discard a fatty from my hand. Of course, when you have it in your opener and you get to strip your opponent's Animate Dead that almost certainly would have killed you, it looks
really good.
EDIT3: Match three was the battle of busted ramp decks. In game one, I pushed out threats faster than he did and won fairly easily with an early Grave Titan followed by Liliana finding a Craterhoof Behemoth. In game two, he ramped like crazy with piles of Rampant Growths, Searches, etc, and ended up landing Mirari's Wake followed by Avenger of Zendikar and a Polukranos. Onto game three, where I finally got the busted start I was hoping for when I drafted the deck. T1 Entomb, T2 Animate Dead on Grave Titan. Easy win in game three.
Two straight 2-1s. I had another one last night that was a really boring UB Tempo Deck that beat the deck it was supposed to beat, then went 1-1 against bad matchups (I lost to the Mirran Crusader deck, but managed to beat the Mother of Runes White Weenie deck).
EDIT4: The deck:
http://i.imgur.com/p9XNm4A.png
. The forgiving prize structure lets you stretch your legs and just enjoy it.
