Hi guys,
you can simplify the boss in throne of the four winds when the debuff (Blackout - Spell - World of Warcraft is put on a player.
In this moment as a rogue or pally just run out of the group and bubble(Divine Shield - Spell - World of Warcraft) it away.
As rogue you can use cloak of shadow(Cloak of Shadows - Spell - World of Warcraft)
With this little trick we saved very much healing.
Hope you enjoy your Kill