Bristlebark  

He cast Thorny Vines on me today. Be warned.

http://everquest.allakhazam.com/db/spell.html?spell=8580

After spending 15 hours or so killing all the tanglefeet mobs near the spirit wolves, I finally took a wander through the thick of these bushes and discovered Bristlebark was roaming around on the other side. I killed a few mobs to get to him and killed him as well. Then he spawned three times in a row. Then Thorn spawned right after that a couple times as well. Only one spirit mark so far, though.

Some folks have indicated that any mob could be a placeholder. This may be true, but so many hours without any luck on the spirit wolves side followed by so few hours with chain spawning of the named mobs near the Relic side leads me to think that it has something to do with the location.

The next day, I had the same experience. So, I have no idea what the placeholder is for these guys, but I suspect that they must be limited to the side near the Relic zone in.

I didn't try to root or snare either Bristlebark or Thorn because they continued fighting until they were like 10% health and, when they finally decided to flee, they didn't move quickly enough to cause any trouble with adds.

Now if I could just manage to figure out where Seedstep and Willowalk spawn, so I can upgrade some bazar-bought gloves. ;)

I might be wrong but I have only seen bristlebark and others spawn from the a tanglefoot spirit mobs not the lesser or other ones

droped
Dark Spiritbone Urn
Magic Item Lore Item
Range
AC: 10
str 1 dex 4 sta 1 cha 5 wiz 5 int 5 agi 1
hp 65 mana 65 end 65
fire 1 disease 2 cold 4 poison 4
WAR PAL RNG SHD MNK BRD ROG BST BER
Race: ALL
Slot 1: type 7:

Dropped the Spirit Mark of Vision, used for the new helmet quest that Lady Usher offers in Arcstone. Bristlebark appears to spawn from any of the tree stump trash.