once you hand in to Athele, the other druids spawn one by one as you do your hand-ins. Just wait a minute, check track after each one. patience.. I did note that after handing in to Athele the next druid spawned north of me, then the next on the other side of reaver hill, west I believe, then the last one, Teloa, well I missed her, but she walked to Athele an I got her there. Just hand in, and gate or run to the spot, its not that big a deal. AE snare or root the reavers, and kill the Corruptor.
Does this guy only spawn during the hand-in sequence for the ranger/druid epic? I did the 3 hand-ins then came back a couple hours later when I had help for the reavers but Teloa was gone.