T4 healer tips

[Shinkyo]

Snip

Good post.
Something I do during Phase 4 (rooks and spiders) is cast holy at the very beginning of the phase to stun the spiders as they aggro the healers. This give a few extra seconds for the tanks to get aggro and you're less likely to get hit.
I've started doing this from running T4 on DF with tanks that were slow at picking up adds (and obviously, I would die...).
Since the main purpose is to do an AoE stun to protect the healers, you don't really care about cleric stance but I usually use it since there's plenty of time for tanks to aggro and for you to deactivate cleric.

Also, make sure you Stoneskin the healers and use surecast (if available) at the beginning of each phase. If the tanks aren't fast enough at picking up adds, you'll die in no time...
That's the one positive thing about running DF, you have to expect people to make mistake so you come up with little tricks to mitigate them.