Secret Quest (Season 38)

Look for these cards in the opening hand, especially Fire Fly. All the 1 drops are good in the opening hand, however a small tip, keep the Glacial Shard back and use it only if necessary (a good control card)... By Turn 7 (usually even before) you should do the Quest. Use the warden if necessary because it'll do great with the Raptors starting the drawing engine and filling your board. A small tip when quest is completed try to always keep in a raptor in hand so that if the board gets cleared, you can jump start the draw engine again. The last nails in the coffin are the Tundra Rhino and Infest (although it's perfect with a board full of minions, don't hesitate to use it in an early game).

Apart from the usual cards in hand (the 1 drops) since in the early game can be quite aggressive, Explosive Trap is a good tech card against other Aggro decks. In the mid or later, Nesting Roc is a great minion against Aggro styles. Glacial Shard is a great control card against aggro decks.

Control decks are very difficult to play against especially when entering the mid/late game. However these cards helps keeping board pressure with their passive effects and deathrattles.