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

Pattern: Devilsaur Leggings

NPC	Level	Zone	Chance
Glutinous Ooze	52 - 54	Un'Goro Crater	1.08%
Primal Ooze	50 - 52	Un'Goro Crater	1.02%
Cloned Ooze	50 - 52		1.02%
Muculent Ooze	48 - 50	Un'Goro Crater	0.9%