NPCs composing that spawngroup :

a_timeless_golem (100%)

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

thegrey1368633, range=88 (825,427,-12)

a_timeless_golem (33%)
a_timeless_golem (33%)

thegrey1368502, range=46 (705,373,-22)

The_sand (100%)

thegrey1368290, range=98 (689,318,23)

a_creature (50%)
TRAP_PH (50%)

thegrey1368252, range=46 (745,447,-19)