Every team I ever go against . Fucking ADCs are beyond broken, people like Yasuo or Ekko who you can't get away from or catch yet do 50x your damage, Zed and his LC$ plays guaranteed kill ult, assholes like Trundle / Nasus / Darius / Olaf and the like (one damage item, but triple the damage of everyone else), Malphite, Amumu, Morgana, Anivia, Annie, so on.
Basically, braindead fucking stupid champions who, for some stupid reason, are rewarded SO MUCH MORE than any more complex champ.
But hey, that's balance in a whale-milking station like League! Whales don't like it when they can't win with minimal effort, and they HATE losing to champs they can't play.