As an alternative after Unrest you can...
40-45 gnomes in Sol A
45-50 in Sol b or Oggok
45-54 Grobb (5 spawns near entrance blue to 54). Can also do the Hole zone in
54+ various places. DL, HHK, Hole, probably Karnors depending on gear.
The Narandi keeps dropping in price. Once you hit 55 all pallies should pick one up. It was pretty amazing prior to the dmg increase but now it's a world-class root jousting weapon.
Prior to the bump in damage I killed Rocksoul at level 55 in The Hole near the zone-in. It took like 20 mins...
https://wiki.project1999.com/Rocksoul
I wasn't jousting but just straight meleeing until a proc, then root/helm healing until it broke again. Enstill wasn't getting full duration so I memmed root to save the mana. Probably went through 6 or 7 procs on him. Yea over half the damage done was from the dot. Doing it again I'd prob just joust from the start and use the low lvl root.