You may be wondering are there beasts in your taunt druid?
Well the metas mostly aggro so you run plague and the death knight for survivability.
Vs. control you just don't play the death knight and plague and you will out value every deck.
Also just 1 hadranox or 1 N'zoth will beat any aggro deck hence why you run DK and plague. I went on a 10 win streak from silver gold to platinum rank today.