Complete the two arena prerequisite paths that open access to the Four Harbingers encounters.
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WHERE & HOW TO FARM
Where to farm
/CelestialArena and /InfernalArena, followed by /FourHarbingers to verify access.
The Four Harbingers are gated behind prior battles in both Celestial Arena and Infernal Arena. This progression route focuses on clearing that access requirement, rather than repeating the separate boss-material and merge farms. Finish the arena battles, then check that the Harbingers are accessible before switching to a specific boss goal. Treat the unlock fights as one-time progression unless the game presents a repeatable objective you want to pursue.
Reach both arena maps in the Celestial Realm progression.
Be equipped to complete the battles required in each arena.
Have a target in the Four Harbingers map for after access is unlocked.
Enter /CelestialArena and review the available battle path.
Complete its required battles in the order presented by the map.
Confirm the Celestial Arena path is cleared before leaving.
Enter /InfernalArena and review its required battles.
Complete the Infernal Arena path and confirm its progression is cleared.
Travel to /FourHarbingers and check that the boss encounters are now available.
Choose one Harbinger and inspect its reward list before beginning a separate material farm.
Farming tips
Finish both arena paths before spending time trying to enter the Harbingers map.
Decide which boss reward you want after the unlock, since each encounter has its own materials and merge rewards.
Repeat, collect and use
Arena battles are progression work and need not be repeated once the access requirement is complete. Repeat a Harbinger encounter only when collecting its specific materials for a chosen reward.
Common mistakes
Attempting the Harbingers before clearing both arenas; finish Celestial and Infernal Arena first.
Assuming clearing one arena is sufficient; complete both prerequisite paths.
Continuing to repeat arena fights after access is open without a separate goal; switch to the desired Harbinger reward farm.
When to stop or switch
Stop the arena route when /FourHarbingers is accessible. Then choose a specific boss and reward, or move to another progression goal.
