NPCs composing that spawngroup :

An_Icy_Drake (50%)

A_Shimmering_Drake (50%)

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

skyshrine_18, range=68 (775,910,222)

skyshrine_19, range=72 (645,955,222)

A_Shrine_Protector (50%)
A_Shrine_Protector (50%)

skyshrine_22, range=89 (775,860,222)

An_Old_Racnar (50%)
A_Shrine_Protector (50%)

skyshrine_140, range=48 (659,918,67)

An_Emerald_Drake (50%)
An_Icy_Drake (50%)

skyshrine_289, range=29 (730,900,351)

An_Elder_Shrine_Golem (100%)

skyshrine_112958, range=91 (764,846,223)

Talgixn_Fe`Dhar (100%)

skyshrine_113092, range=52 (759,926,223)

Eldriaks_Fe`Dhar (100%)