The Darkness Warrior

If you dont know what deck your opponent is playing (zoo lock or control for exemple), the best card to keep is blood razor + execute, because if its an aggro deck you can clear the board with the razor, and if its a control you can use razor and than execute... Brawl is good to keep versus an aggro deck, but if you dont know whats your opponent is playing its better to keep it...

Cornered Sentry is a really good card when you have Drywhisker Armorer, is a really good combo, and if you need a clear board you can use blood razor, and you can play sleep with the fishes to guarantee the board will be yours. Stonehill Defender is a good way to stop the push from you opponent, discovering armorsmith or public defensor too.

The Most Famous control decks on the meta right now is Warlock, Jade Druid, and Mage, so its good to keep shield block + shield slam, because you probably will just hero power until he plays something big, so a good turn 4 is shield block + shield slam to remove a considering minion, and the geist is overpowered when use versus druid...