3 heal + disc priest smiting, let the tanks do the painting, dps focus on dealing damage and not standing in stuff. Didn't break chains the whole fight.
No-cobalt combination with this tactic was pretty much a joke, no-amethyst with some melees a bit tougher.
Thereis nothing wrong in going 4heal here, enrage is quite forgiving (if ppl don't die), and with Jade boss up aoe damage on raid is quite high.