Does this give a faction hit?
Luggn Druid of Drinal
The Guardian of the Glade has a large roaming path (mostly north-to-south) along the western area of the zone (click for map image).
It summons, is immune to root/snare, and and sees through invisibility. Reported to have no faction hits for killing it.
Map point for "oceangreenhills.txt" file: