This. So much this.

With Resurgence, Water Shield is the biggest source of mana return that we have. If you let it drop in the middle of a fight and forget to refresh, you will be oom very quickly.

During a low damage cycle, my casts look like Docseuzz with an occasional CH if there has been some random damage.

plus with resurgence, a regular healing wave crit actually generates mana. Another option, although it takes some practice, and knowing the fights, is to talent into telluric currents, and whenever you're not healing, throw a LB or two at the boss. I try to slide one in between every third or forth heal to greatly reduce my mana burden.

i second the importance of keeping water shield up
i set my healbot buff monitor to watch for it and also have it bound so once my bar changes red i hit it.

Water Shield's 3 charges + near-constant AoE damage = sad shaman constantly wasting globals refreshing his shield instead of healing people

@Cbeefman

I LOVE U!

Now Cbeefman needs to chime in with "I love you too random poster!"

:-D