Five: Aldor Peacekeeper
Aldor Peacekeeper has been one of the strongest cards in Hearthstone since beta. It has an effect almost as strong as Big Game Hunter’s, but without the situational condition. It also comes with a very strong body attached. Aldor Peacekeeper is missing one stat point for its cost. However, its ability can easily take three or more mana worth of stats off of mid to late game minions. It is also one of the strongest tempo swings in the game. Paladins are usually ahead on board. This means Aldor Peacekeeper allows the Paladin to kill any minion for essentially free.
The only downside to Aldor Peacekeeper is that it is a rare, so you won’t see it as often. If you could play an entire deck of Aldor Peacekeepers, you would be crazy not to. The card is removal and a nice body packaged in a cheap card. What’s not to like?