phase 1: dmg on boss, avoid big telegraph phase 2: pick up your weapon (blue thingy), kill channelers clockwise. if you have a telegraph on you, drag it on the channeler and dodge out. avoid the electrostatic telegraphs circulating around the boss, they stun you. best keep on the inside. phase 3: pick up your weapon again. there is an aggro reset, the boss will targetz the healer and hit him hard. tanks better taunt fast (you need your weapon first). as a healer be prepared to get hit, use potion, innate ability, whatever you have. after that it's dps on the boss and find the small safe zone in the huge telegraph. use dodging to get ther, and take care to avoid the electrostatic telegraph.

video guide: http://youtu.be/fLr_5DRvXC0