The Spirit Realm

Hp is consumed 1.8hp per 1 mana of the spell, I think.

Shaman mana regen during downtime is already far in excess of cle/dru/enc, so using SC to buff is pretty silly, imo.

The right time to bust is out is when you're oom in a chain casting situation, like raid fights with AEs to heal off, or in MPG trials, where the goal is to pour out as much damage as possible. You can still Canni normally while SC is working, so you cast your heart out going to oom, pop SC. For four and a half minutes you cast all the spells you can, while keeping Serenity on and continuing to canni. By the time SC wears, your mana pool will be back up to 4-6k+, depending on the timing of Cannibalization and your buffs.

Haha I don't have group wunshi either and it is a PITA to do 2 or 3 grps single.

Some people are too much of sweethearts to do the lower end buffs. And of course if you have time down while the other classes buff, why NOT hit everyone? I have no problems using SC to buff because I know that the raid probably won't be doing much of anything for a half hour after I buff, elt alone things that require me to wish I had SC available.

there is many uses for SC, ive used it to buff, rebuff after wipes, heal trial groups when cleric dies on pull, non stop nuking anmed, you name it. its only limited by imagination, and your right, its not like a cleric DR that resets in 24hrs, its 36 minutes

If you solo much, this SC is invaluable. Go full burn with some decent mana/hp regen in Fire, once you start running lom, hit SC, keep burning, for me it usually takes about the recast time to get low. There really isn't any AA like it for eliminating down time.