This boss can only be summoned if someone is on the questThe God Hakkar. For more information on the quest chain that unlocks this quest, check out our quest guides for Sunken Temple above. Even after completing this quest you can still summonAvatar of Hakkarwith theYeh'kinya's Scrollyou ...
Sunken Temple is the main raid instance of Phase 3 in Season of Discovery, being re-worked from a 5 man dungeon to a 20 man raid with 8 unique boss encounters. Here, you can find information about how to reach the raid, guides for each of its encounters, quests you can complete, ...
given byFel`ZerulinStonard. You will have to gather Artifacts, you can easily find those underwater in the pool around the Sunken Temple entrance. Can be done solo. Then you will get the follow-up quest, you will have to go talk to theAtal`ai Exile, he will send you back toFel`...