Spirit Link Totem (new talent) reduces damage taken by all party and raid members within 10 yards by 10%. This lasts 6 seconds, and every second it is active the health of all affected players is redistributed among them, such that each player ends up with the same percentage of their maximum health. This counts as an Air totem and has a 3-minute cooldown
its highly situational at best
Stand on your lock's port at 10%, he ports to you with 90% hp, use totem, both of you go to 50%, he howls dps off you and you can top both of you.
Playing with a lock, we already coordinate howls like this, so not hard to use totem in conjunction with it, depending on whether or not its useful for you to gain the instant hp at the expense of your partners hp.
My main objection is that it's useful only when your partner is within 10 yards of you, which is melee range, so melee trains that are raping the shaman, can just hop off the shammy they were training and swap to the partner who just dropped a ton of hp because of the totem.
It just doesn't solve the problem of melee cleaves vs rsham, since the other team will just force the shaman to drop the totem, use an instant cc on the shaman, go on his partner who is standing right next to them and has already been dropped down to 80-50% of their hp.
They will either score a kill here, or swap back to the shaman as totem/instant cc ends, leaving his partner low and the shaman behind on healing as he has to top both himself and his partner through two pummels.