NPCs composing that spawngroup :

#The_Fabled_Magmaton (10%)

#The_Fabled_Magma_Overlord (60%)

#The_Lavaforged_Behemoth (30%)

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

pofire2170453, range=25 (-459,528,-174)

a_fiery_spirit_equine_lord (100%)

pofire2170456, range=77 (-491,487,-154)

a_great_flame_lord (100%)

pofire2170457, range=40 (-417,579,-178)

an_obsidian_lava_spider (50%)
a_magma_rocklord (50%)

pofire2170459, range=30 (-425,522,-173)

a_magma_rocklord (100%)

pofire2170460, range=78 (-506,501,-153)

a_magma_rocklord (100%)

pofire2170461, range=85 (-486,620,-173)

a_magma_rocklord (100%)

Magmaton, range=0 (-442,547,-180)

#The_Fabled_Magmaton (5%)
Magmaton (95%)

pofire_288918, range=40 (-417,579,-178)

An_Obsidian_Magma_Spidering_# (20%)
An_Obsidian_Magma_Spider_# (80%)

pofire_288921, range=77 (-491,487,-154)

A_Greater_Magma_Lord_# (50%)
A_Magma_Elemental_# (50%)

pofire_288923, range=30 (-425,522,-173)

pofire_288924, range=25 (-459,528,-174)

A_Fiery_Magma_Steed_# (60%)
A_Fiery_Spirit_Equine_# (40%)