Thanks for all of your help. It turned out to be a fairly small tournament, as we only had four people show up. With so few people, we played a round robin with each match up being best two out of three.
Based off the suggestions I was given, I made changes to my posted dark elf deck. I focused oh hand control, instead of deck discarding. Beastlord Rakkarth and Clan Moulder Elites also added some much needed finishing power to the deck. Because a couple of people asked, here is what happened at the tournament.
The first deck I played was an Orc Rush deck and I had two close match ups against it. Both times, the orcs rushed before I could really get control of the situation. However, both times I was able to get control of the situation by taking out his weak units with hit point removal and cripple his engine with Withering Hexes. In the second game, I was saved from the jaws of defeat by Sacrifice to Khaine. The unexpected Sacrifice caused his attack to stall, and a Wight Lord the next turn combined with normal hit point reduction taking out the weaker unit cleared out his battlefield. I won both games, but I won with one zone burning, and another zone one hit point from burning.
The second deck was a Dwarf Rush Deck. The deck was almost entirely units with a few tactics thrown in. Many of the units were not shy about sacrificing themselves for abilities, so that Reclaim the Fallen could bring them all back. In the first game I got beat, because his deck moved to fast and my deck moved to slow.
In the second game, I gained control almost immediatly, using hit point reduciton and soul stealing to keep him from building up his zones and I easily won that game. To finish the best two out of three I got a mercy win, because he suddenly had to go and forfieted.
The final match up for me was also the championship game, because my opponent had also beat the other two players so who ever won our match up would be the tournament winner.
He was playing a Chaos deck that was focused on corruption. The first turn of the first game I got shades out, so his hand started shrinking quickly. I also used withering hexes to keep his support cards from helping, so several turns in he was still only drawing one card and collecting three resources. This was good because my deck stalled a bit, but for the most part I had control and was able to slowly pick him off.
The second game was reversal of fortune. He kept slowing me down with corruption, and a warpstone meteor in the quest kept me from getting his hand low. On one turn he played two Savage Gors, and I was unable to counter their attacks.
The final game swung back in my favor, and my deck once again worked like it should. I depleted his hand, so that on his turn all that he had to play with were the cards he drew. I won the final game and the tournament.