There is a particular place in sunwell that I get chain innervates. After felmyst those mana fiends drain 3k of your mana regardless of whether your tanking them or not. I refuse to pot on trash, unless its to save my ass with a health pot. We usually have 3 druids, 1 feral and 2 resto and they swap innervates on me. ZA? Usually dont need one until on the trash before 4th boss bear runs.