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

Wrathtail Head

NPC	Level	Zone	Chance
Wrathtail Myrmidon	20 - 21	Ashenvale	100%
Wrathtail Razortail	19 - 20	Ashenvale	100%
Wrathtail Wave Rider	18 - 19	Ashenvale	100%
Wrathtail Sea Witch	19 - 20	Ashenvale	100%
Wrathtail Sorceress	18 - 19	Ashenvale	100%
Wrathtail Priestess	20 - 21	Ashenvale	100%

Quest	Level	Side
The Zoram Strand	19	Both
Naga at the Zoram Strand	19	Both