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

Living Rot

NPC	Level	Zone	Chance
Scourge Warder	55 - 56	Eastern Plaguelands	100%
Dark Caster	56 - 57	Eastern Plaguelands	100%
Gibbering Ghoul	56 - 57	Eastern Plaguelands	100%
Unseen Servant	55 - 56	Eastern Plaguelands	100%
Hate Shrieker	55 - 57	Eastern Plaguelands	100%
Stitched Horror	57 - 58	Eastern Plaguelands	100%
Ziggurat Protector Elite	58	Eastern Plaguelands	100%