While we wouldnt have the full block until 2013, Return to Ravnica brought powerful new tools (Abrupt Decay, Sphinxs Revelation, Cyclonic Rift, Rest in Peace, Dreadbore) and one unassuming but eventually problematic megaguildmage/one-mana planeswalker in Deathrite Shaman
The enters-the-battlefield ability is also great at helping filter away lands in the late-game to mitigate flood, and can also allow you to cycle away cards that are poor in the matchup in Game 1s, like Thalia, Guardian of Thraben in the mirror match or Reflector Mages against other control decks
Fireshrieker is an inexpensive option
Though one of the more niche creature types in Magic: The Gathering, the Kithkin creature type has plenty of unique cards that can enhance your deck in a wide variety of ways
4 The Bare Necessities (Song) Card Number 28/204, Amber Ink A perfect song to be used against decks using a lot of actions or items, The Bare Necessities allows the player to see the opponent's hand and discard one card from it that is not a character
No really, that's his name - Clive