NPCs composing that spawngroup :

a_Sebilisian_guard (34%)

Sathirian_Dark_Shaman (33%)

Sathirian_Dread_Knight (33%)

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

sebilis_23, range=83 (-851,757,-68)

a_leprous_scarab (50%)
a_Sebilite_golem (50%)

sebilis_26, range=88 (-839,812,-69)

sebilis_44, range=74 (-714,708,-68)

sebilis_46, range=71 (-838,751,-69)

sebilis_47, range=1 (-767,760,-69)

sebilis_3288891, range=83 (-851,757,-68)

a_Sathirian_worker (50%)
a_Sebilisian_guard (50%)

sebilis_3288894, range=88 (-839,812,-69)

sebilis_3288914, range=74 (-714,708,-68)

sebilis_3288917, range=71 (-838,751,-69)