Just made a classic(?) heal monk to try some 2-man grifts with a friend. Neither of us have super good gear, he switched to firebat WD (just recently started to collect the gear).
I think we are doing ok in the boss fights, usually when he dies we know what the issue was, i.e not standing in the circle or I forgot to refresh epihany or something and that's fixed with plain old practice.
Now to the question, how should we play when hunting for a new elite pack? It feels like everything is one-shotting him as he looses the SH stacks and armor buff from SH.
Do I need to spam my mantra? Does the shield from mantra of healing stack or is every 3s enough? Anything else I need to do keep him alive?
Anything he should think of while moving, except for the obvious of casting wall of death every 10s to keep up the 4pc HT buff?
I prefer mantra of salvation agility rune ober healing, and i hit it every 4 secs to keep it up 100% of the rift. It boosts resistances a lot! I would also try using inner sanc safe haven rune in lieu of intervene. Spam cyclone strike as much as spirit allows.
I recommend using the Temple of Protection rune for Inner Sanc for cc-immunity. Remember that in 2 man GR there is no Barb with IP. I prefer further the Implosion rune on Cyclone Strike for better pulling as the healing via Soothing Breeze is afaik capped at 1APS and hence worse than your healing from epiphany.
Looking at your gear, I think you lack CDR. You miss it on one weapon, shoulder and amulet slot. In addition you can roll from 6% to 8% on your Oculus Ring and Gloves. With enough CDR you can achieve 100% Inner Sanc uptime WITHOUT Zodiac procs. If it's a bit less it is still ok, but try to get as much as possible. Other than that you should look for an ancient Zodiac with Health globe bonus. The more you have, the better
I don't know about your WD but if he dies while standing and attacking in a big pull of monsters, he should try the swampland passive for a huge resistance boost (you should still avoid arcane and too much lightning). If he dies in transition from one pack to another make sure that he does not get stuck. Try to pull the monsters out of his way with Cyclone strike. This helps you also keeping your 50% dmg reduction buff from Lefebvres.
Regarding loosing the SH stacks, I don't know, as I do not play WD, but is it not possible to keep the buff up all the time?