TheWoWDBJammal'an the Prophet must be killed first, as the quest text indicates, or else you will not be able to initiate combat with Eranikus.
Quest
Eranikus
A World of Warcraft quest in The Temple of Atal'Hakkar. Facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
This quest pretty much puches lore in the face... Ugh...
I suggest you read Stormrage if you think Eranikus is all fine and dandy.
Quest facts
Quest ID27605
The client quest POI data records no map location for this quest, so no map is shown.
Check whether you have already completed this quest
in-game: /run print(C_QuestLog.IsQuestFlaggedCompleted(27605))
Description
The Hakkar blood the Atal'ai have been injecting into the green dragons has had devastating effects on the dragons themselves. It appears that these dragons, former jailors of the Atal'ai, have been corrupted by its presence in their bodies and have become creatures of Nightmare. Eranikus, Ysera's primary consort and lead watcher over the temple, was infused with the largest quantities of blood and has become twisted beyond imagination. After Jammal'an is dead, find Eranikus and end him.
Getting there
Inside the dungeon: The Temple of Atal'hakkar
Thousands of years ago, the Gurubashi empire was plunged into a civil war by a powerful sect of priests, the Atal'ai, who sought to summon to Azeroth an avatar of their god of blood, Hakkar the Soulflayer.
Bosses in the Adventure Guide, in order: Avatar of Hakkar, Jammal'an the Prophet, Wardens of the Dream, Shade of Eranikus.
Entrance: Pool of Tears, Swamp of Sorrows at 76.1, 45.2.
Instance text, bosses and entrances are the client’s Adventure Guide data.
Community notes from Wowhead · 7 comments
Top 3 shown aboveThe comments below were written by Wowhead users. They are community notes, not TheWoWDB comments. See them in context on Wowhead.
The top 3 are shown in Top Comments above. Read all 7 on Wowhead.
Money10 gold50 silver
Experience4,100 XP
Reward details
Items you receive
TypeArmor Trinket
Item level27
BindingBinds when picked up
Stats+10 Haste
UsePoison Cloud
Sells to vendors for1 gold95 silver
Item facts are the current retail client’s (ItemSparse); the specialisations for a pick-one item are the ones the Blizzard quest API lists; faction and currency text is the client’s own. Lowest listed price = the US commodity auction house now.