Where to get it

Places		Quantity	Chance
Mineshaft geode	One outcome per slot	× 1	16.08%
Foundry elite	One outcome per slot	× 1	16.08%
Temple	One outcome per slot	× 1	16.08%
Temple of Vulcan	One outcome per slot	× 1	16.08%
Chambers of Heat	One outcome per slot	× 1	16.08%
Molten Crypt	One outcome per slot	× 1	16.08%
Flamines Volcanalis Foundry	One outcome per slot	× 1	16.08%
Overrun Mineshaft	One outcome per slot	× 1	16.08%
Volcanic Lair	One outcome per slot	× 1	16.08%
Ashen Crypt	One outcome per slot	× 1	16.08%
Forgotten Machinery	One outcome per slot	× 1	16.08%
Lost Villa	One outcome per slot	× 1	16.08%
Bosses		Quantity	Chance
Great Phoenix of Arabia	One outcome per slot	× 1	16.08%
Creatures		Quantity	Chance
magus vulcanHall of ArtificeTemple of VulcanChambers of HeatVolcanic cave tectonic2The Thunderous DeepMolten CryptThe Ardent ChamberAshen CryptFlamines Volcanalis Foundry	Independent roll	× 1	33%