It really depends on how hard you farmed SM before doing ZF. My pally was in all the blues she could use from there. I farmed that stupid ribcage for hours before it dropped.

That being said, I used 3 healing/1 mana, 4 searing, 4 grounding totems on a 6 second reset. I'd pull with dynamite, consecrate, seal to stun, judge it right away, reseal, stun an off target. Open up dps on the first melee target. Drop grounding totems again (grounding totems in my macro were first, then healing/mana and finally searing) and move to 2nd melee target if there is one. If there's only one caster or two casters left, keep dropping grounding totems and burn them down.