NPCs composing that spawngroup :

a_goblin_priest (100%)

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

permafrost_1, range=62 (228,24,3)

an_ice_goblin (50%)
an_ice_goblin (50%)

permafrost_37, range=78 (283,15,-25)

an_ice_goblin (50%)
an_ice_goblin (50%)

permafrost_38, range=63 (218,141,3)

a_goblin_evoker (50%)
a_goblin_priest (50%)

permafrost_42, range=83 (329,96,-20)

a_young_dire_wolf (50%)
a_young_dire_wolf (50%)

permafrost_49, range=59 (228,141,3)

permafrost_50, range=42 (288,75,3)

an_ice_goblin (50%)
a_goblin_evoker (50%)

permafrost_53, range=63 (260,22,3)

an_ice_goblin (50%)
a_goblin_diviner (50%)

permafrost_62, range=46 (287,105,3)

an_ice_goblin (50%)
a_goblin_diviner (50%)

permafrost_65, range=34 (270,59,-27)

a_dire_wolf (50%)
a_young_dire_wolf (50%)

permafrost_82, range=89 (262,-4,-25)

an_ice_goblin (50%)
an_ice_goblin (50%)

permafrost_124, range=43 (203,77,3)

an_ice_goblin (50%)
an_ice_goblin (50%)