Tihr, I have a question for you!
2 healers can be on the first shard soaker. Spriest stacks to 20, disperse and win. FH+PW:S spam during timewarp and I can get 90-100 stacks before I have to start tank healing again. We use a paladin tank for LoH on this (survivability for those 20 sec without a healer) but a druid could probably do it too (this is one job I don't think dk would perform as well for). Overall for the length of the fight pally is probably a weaker tank here than druid and dk might be best for deci (deathstrike is the best out that any tank has here, LoH is good but we have to use it right at the start).
Anyway that's all beside the point. Basically the tank needs heals again by the time the first crystal is gone. By the time the first soaker reaches 20, healing is getting pretty hectic: without CDs, each tick is doing 80k dmg before resists. Means he absolutely needs at least one heal per tick, and if the healers are in a bad stride the soaker could die without the use of a raid cooldown.
Now, how exactly do you line up your raid cooldowns so that the second soaker can take a whole crystal without 2 healers? Or, how do you arrange things so that your tank can survive that first minute without any direct healing?
Most obvious answer I can think of is pally tank healing for 2nd shard with beacon on soaker.
I'd love it if you could help me with this
I have access to:
aura mastery, hand of sacrifice, the spriest's divine hymn for 10% healing, Divine Guardian, LoH, Ardent Defender, Rallying Cry, and Dispersion. Only option for 2nd soaker is a druid with survival instincts/HoS/DG (rallying cry would interact in interesting ways here strengthening hand of sacrifice by a great deal)