Waldoff said:
I do not think they should get any better reactive heals than woundbane. A shammy's mana regeneration ability is too high as of now to give them the healing power to keep a raid tank up alone imo.
Also, we have to take into account that canni is not the only thing that make us go oom later than other classes.
Let's examine this:
Shaman with Woundbane, base:
-285 mana, 3.75 cast time, heals for 1650, 5.7
Cleric with Light of Eternity, base:
-395 mana, 3.50 cast time, heals for 2700, 6.8
Druid with Sihala's Empathy, base
-345 mana, 3.75 cast time, heals for 2150, 6.2
We have a 5 min fight and we are chaincasting our heal without stopping:
Shaman: 80 heals casted x 285 mana each = 22800 mana = 100%
Cleric: 85 heals casted x 395 mana each = 33575 mana = 147%
Druid: 80 heals casted x 345 mana each = 27600 mana = 121%
Of course the mana is not real cause there is time between each cast, lag, etc. but the %s are and can be extrapolated to any situation.
That means that for the same amount of time and same focus on healing, by the time the cleric has consumed his 7500 mana pool the shaman only has consumed 5100 mana, so even without using canni, yeah we have more mana left, still 2400 (32%) for the same mana pool cause our heals cost less (and heal even less than they cost, in comparision).
Same for druid. When druid consumes his 7500 mana pool, we have consumed 6200, we have still 1300 left (18% mana pool)
I don't say canni is not mana regen important, just saying is not the only thing that makes us end with more mana or be the only healers at the end (and like Jose says, when this happens is a very probable wipe).