he shoots out cannons that do
AVOIDABLE aoe damage within 6 yards at people
http://www.wowhead.com/spell=144154
healing is really rough on this fight, make sure people are individually using their cds smartly and you are using all your raid healing cds.
what we do is for the first part stack in amz and get knocked back, stay back and here we drop a tranq, healing tide, something. loosely spread out.
stack back up for 2nd pulse in barrier, use another cd
use personal cds for 3 pulse
resto druids are pretty strong on this fight and your hpally does not seem to be doing very well
Your guild is taking a ton of damage from borer drills