This season i became Legendary with the use of two decks. Dragon Priest and Dragon Shaman.
I used Dragon Shaman for the grind to rank 5. From that moment on 60% of my oppenents was a Secret Paladin. I seriously lost to many against those so i switched to Dragon Priest.
RenoLock, Tempo Mage, Aggro Druid, Midrange Druid, Secret Paladin
Patron Warrior, Control Warrior, Aggro Shaman, Warlock Zoo, Midrange Paladin
Freeze Mage, Anyfin Paladin
Proof of legend: