Our group usually has a frost mage kiting the adds, with the assistance of a hunter trap he barely gets hit and does a very good job at stacking the adds, his dps suffers a little, but we have no problems on any sort of level with dps. the key is getting those adds as stacked as possible to make the kiting in p3 so much more bareable, kite the adds around the room with nef in the middle, make sure to keep rotating nef with the adds and again its cake.
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