Well, i think they just buffed HP by another 25% on PTR just now. 120k mages. and the flag carrier are gonna be tanks in premade. No doubt. So it will be a 200k prodin carry the flag. I don't think 4 shamans can do it there. Need to CC the healers on their side and coordinate to get a kill.

In addition, other than the HP madness, Skill like these really worries me:

Power Word: Barrier duration reduced to 10 sec, down from 25 sec. No longer absorbs a given amount of damage, now reduces all damage done to friendly targets by 30%. While within the barrier, spellcasting will not be interrupted by damage.

When they have a priest, you better got one for your own.