NPCs composing that spawngroup :

#Hinvat_Deathbringer (3%)

Decorin_Brawler (25%)

Decorin_Lieutenant (25%)

Decorin_Warrior (25%)

Hendin_Shadow_Master (22%)

NPCs spawning around that spawngroup :
(Max range : 100)

potactics2140094, range=34 (-287,320,168)

Decorin_Grunhork (100%)

potactics2140162, range=69 (-280,285,166)