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

Rotting Wood

NPC	Level	Zone	Chance
Withered Protector	55 - 56	Felwood	26.0%
Irontree Wanderer	52 - 53	Felwood	25.0%
Irontree Stomper	52 - 53	Felwood	25.0%