I dont,because i dont see it any usefull as a tank.
Even if you do, i dont think that raid will feel any benefit of it with large aoe damage bursts, you will simply die.
As for healers, i dont think that any of them will be fast enough to switch all his heals on you and get you up fast enough, and it will be 100% suicide if you use this ability while tanking. Why dont they just give us an ability to reduce incoming
raid damage by 30% with no penalty, like something oposite to shamans heroism(offensive shaman hybrid, defensive paladin hybrid), witch has no penalty, imagine if it would increase raid damage damage done, but also 30% of this damage would be redirected to the shaman, this is how this ability looks to me
Or maybe i am wrong, is here anyone who gave this ability some good testing on PTR? is it deadly or usefull?