Items, NPCs, quests, objects and spells of patch 1.12.1, read live from the realm itself.

Incendosaur Scale

NPC	Level	Zone	Chance
Incendosaur	47 - 49	Searing Gorge	100%

Quest	Level	Side
Restoring Fiery Flux Supplies via Iron	60	Both
Restoring Fiery Flux Supplies via Heavy Leather	60	Both
Restoring Fiery Flux Supplies via Kingsblood	60	Both