Hearthstone: Heroes of Warcraft -
#2 Druids -
The two main archetypes of Druid are control Druid and midrange Druid.
Control Druids are made to win on resource advantage. Ragnaros and Ysera are designed to win you games based on resource advantage and these druids are also equipped with tools to deal with almost any threat.
Midrange Druid is based on being able to switch from control to aggro based on the matchup.