Nightmare Bell
Drops from Fel-Touched Pet Supplies. Once a holy artifact used by draenei priests to calm spirits, it has become animated by anguished souls and drawn to locations of death and corrupt... Magic type. Warlocks may recognize this as the Bell of Dethmoora, from the old Dreadsteed quest.
The 
Nightmare Bell is a pet that drops from 
Fel-Touched Pet Supplies, obtained by defeating any of the 15 Fel-corrupted legendary pets in Tanaan Jungle.
Guide awaiting review
Defeat Fel-corrupted legendary pets
Challenge any of the 15 Fel-corrupted legendary pets in Tanaan Jungle: Defiled Earth, Skrillix, Netherfist, Dreadwalker, Vile Blood of Draenor, Bleakclaw, Dark Gazer, Mirecroak, Direflame, Tainted Maulclaw, Felfly, Cursed Spirit, Chaos Pup, Corrupted Thundertail, or Felsworn Sentry. Each pet can be challenged once daily.
Open Fel-Touched Pet Supplies
Defeating any of these legendary pets rewards Fel-Touched Pet Supplies. Open the bag to have a chance at receiving Nightmare Bell along with other pets.
