Druid is pretty simple. You're able to AOE tank very easily since mostly all of your attacks are swipes. You're a leather tank but you have active mitigation that stacks to give you 100% armor (more with stacks and artifact trait).
You also have some of the best damage reduction cool downs in the game, and multiples of them. 40% damage reduction with 2 charges, 20% damage reduction on a short CD, and your artifact power is really good, giving another 25%. Your first gold trait for the artifact also gives you 25% leech, and you have another 2-charge ability that restores health based on damage taken over the past 5 seconds, so you can get hit really hard by an ability and recover easily, or take down larger groups.
I pull 250k dps on trash pulls in dungeons easily, and I have almost 4 million health. With so many cool downs on such short timers, you can survive for a long ass time, even if your healers die.
This post was edited by Otos on Nov 6 2016 11:05pm