NPCs composing that spawngroup :

a_shambling_cube (100%)

NPCs spawning around that spawngroup :
(Max range : 200)

skyshrine_11, range=184 (575,1203,242)

A_Shrine_Protector (100%)

skyshrine_12, range=161 (896,1273,242)

An_Elite_Onyx_Drake (100%)

skyshrine_13, range=139 (896,1214,242)

An_Elite_Emerald_Drake (50%)
An_Elite_Shimmering_Drake (50%)

skyshrine_15, range=165 (828,1037,222)

An_Old_Racnar (100%)

skyshrine_18, range=157 (890,1100,222)

An_Old_Racnar (50%)
A_Shrine_Protector (50%)

skyshrine_33, range=98 (683,1124,67)

An_Emerald_Drake (50%)
A_Ruby_Drake (50%)

skyshrine_46, range=33 (788,1204,67)

An_Emerald_Drake (50%)
An_Onyx_Drake (50%)

skyshrine_47, range=146 (646,1281,67)

An_Emerald_Drake (50%)
An_Onyx_Drake (50%)

skyshrine_49, range=122 (782,1067,67)

An_Icy_Drake (50%)
An_Onyx_Drake (50%)

skyshrine_50, range=91 (736,1276,67)

skyshrine_51, range=141 (870,1274,67)

An_Emerald_Drake (50%)
An_Emerald_Drake (50%)

skyshrine_52, range=114 (870,1214,67)

A_Ruby_Drake (50%)
A_Shimmering_Drake (50%)

skyshrine_57, range=151 (829,1053,47)

An_Onyx_Drake (50%)
An_Onyx_Drake (50%)