Core 2012 - Vampire Onslaught

Efficient attackers like Vampire Lacerator and Vampire Nighthawk hit hard enough on their own to win some games. With an excellent mana curve and eight removal spells (don't forget to "kick" your Gatekeepers of Malakir!), this deck can be played as a straightforward beatdown deck. Sometimes you're just going to drop a 4/4 Vampire Outcasts on the fourth turn and your opponent won't be able to catch up. But different cards in this deck can combine for an out-of-nowhere combo kill. The more you play with this deck, the more comfortable you'll be with those strategies. For example, Pawn of Ulamog effectively lets you get double use out of every creature you sacrifice to make Bloodthrone Vampire bigger, and Kalastria Highborn "drains" your opponent for 2 life every time you sacrifice a Vampire in that loop. That's a lot of life loss in a hurry.

After you get more familiar with the deck, you might decide to amp up its combo elements. One way to do that is to max out on Bloodghast, Kalastria Highborn, and Blade of the Bloodchief. Alternatively, you might decide to focus on the beatdown approach. If so, you'll want to cut the higher-end spells for faster threats. You could decide to build a dedicated Vampire deck with cards like Malakir Bloodwitch from the Zendikar set or the brand-new Bloodlord of Vaasgoth from Magic 2012.