Unending Coil of Bahamut (Ultimate) raid guide

Raid (Ultimate) quick facts

There once were brave souls who uncovered the truth of the Seventh Umbral Calamity. Such trials as they overcame were not to be recorded in history, but far from fading with the passage of time, they have been imagined in vivid detail by the wandering minstrel. As his lilting melody caresses your mind's eye, you cannot help but be transported to the scene of struggle against the elder primal Bahamut...

• Category: Raid (ultimate)
• Difficulty: ultimate
• First Appearance: Patch 4.11, *Stormblood*
• Level: 70
• Item Level Requirement: 345
• Party Size: Full Party (8 players)
• Region: ???

Before queueing

Use the quick facts to check level, item level, party size, required quest, entrance, roulette, and time limit before queueing for Unending Coil of Bahamut (Ultimate).

• Repair gear and meet the listed level/item-level requirements.
• Tell the party if it is your first clear.
• Use the local wiki link for exact duty facts and related articles.

Boss and mechanic notes

Unending Coil of Bahamut (Ultimate) has local boss notes for: Phase 1: Twintania, Phase 2: Nael Deus Darnus, Phase 3: Bahamut Prime, Phase 4: Teraflare, Phase 5: Golden Bahamut Prime. These notes are pulled from the local wiki and should be treated as source-backed prep unless separately marked as human-reviewed strategy.

• Plummet (no cast bar): Frontal tankbuster cleave dealing heavy damage to anyone hit.
• Fireball (no cast bar): A player is marked, and the boss fires a large fireball at that player dealing heavy magic damage. This attack can be split to mitigate damage.
• Twister: Four random players will have small, dark green tornadoes dropped under where they were standing when the cast bar finishes. Touching these causes instant death and causes a heavy knockback on any player nearby, which will also kill them.
• Death Sentence: Heavy-hitting tankbuster that also debuffs with a Slashing Resistance Down II debuff, causing the boss's auto-attacks to hit much harder. Requires a tank swap.
• Liquid Hell (no cast bar): A random player past a certain distance from the boss is targeted with five fireball spits, with each spit dealing moderate damage and dropping a large persistent fire puddle. The fire puddles will inflict Burns to anyone who steps or lingers in them around a second after they appear, killing them after a tick. In a later usage of this ability, a random player regardless of distance will be targeted.
• Neurolink (no cast bar): The boss will drop a small black Neurolink puddle at its current location. Players who stand in this will receive the Neurolink debuff, decreasing their damage dealt by 90% but allowing them to survive Hatch orb explosion, and in phase 3, Aetheric Profusion. This boss will drop a total of three Neurolinks.
• Generate: A random DPS player is marked, and a black orb will slowly move towards them. If the player is standing in a Neurolink puddle, the orb will explode in a medium-sized AoE (Hatch), dealing minimal damage and inflicting Mana Hypersensitivity, which causes being hit by another orb to be fatal until the debuff wears off. Any other players not in a Neurolink that are caught in the orb explosion will die. If a player hit is not standing in a Neurolink puddle, or if the orb is allowed to linger for too long, the orb will explode and instantly wipe the raid (Deep Hatch).
• Aetheric Profusion: Enrage. If the boss is not defeated in time, it will become untargetable and cast this ability, wiping the party. In phase 3, this ability deals lethal partywide damage that requires standing in a Neurolink to survive.
• Heavensfall: Raid-wide proximity damage that causes a knockback from the center of the arena and spawns a pillar. Being too close the center will cause lethal damage.
• Thermionic Burst: The Heavensfall pillar hits parts of the arena with telegraped conal AoEs, dealing massive damage and inflicting Paralysis.
• Bahamut's Claw: Heavy-hitting tankbuster that hits the main target 5 times.
• Meteor Stream: An attack that hits four random players, followed by the remaining four. These deal splash damage so players must spread out. If not all eight players are alive, a random player will be hit twice in a row and will likely die.
• Lunar Dynamo: A large donut AoE with no cast bar. the only safe zones are under the boss or far away.
• Iron Chariot: A point-blank AoE with no cast bar or size indicator. Deals lethal damage with a knockback.

Duty finder and rewards context

Use this section to decide whether the duty belongs in roulettes, high-end queues, mentor roulette, or repeat farming.

• Duty Finder: Raid Finder (Ultimate Raids)
• Time Limit: 120 minutes
• Tomestones: 100 Poetics

Completion notes

After your first clear, check whether the duty has mapping, clear, Blue Mage, loot, music, or collection reasons to return.

• Achievement: Resistance Is Futile (Achievement)
• Music: Phase 1: Twintania: Thunderer
• Music: Phase 2: Nael deus Darnus: Rise of the White Raven
• Music: Phases 3 and 4: Bahamut Prime and Company: Answers
• Music: Phoenix Cutscene: The Coil Tightens
• Music: Phase 5: Golden Bahamut Prime: Beyond Redemption

Verification boundary

This page is generated from local TJPedia wiki data. It does not invent missing mechanics, NPC coordinates, loot tables, or current-party-finder strategies. High-end positioning and current-prog tactics still need human review before being labeled as a full strategy guide.

• Source-backed: duty facts, local boss notes, achievements, and music.
• Needs human review: exact high-end progression strategy.
• Use official patch notes for changed requirements or rewards.

Related on TJPedia

Wiki: Unending Coil of Bahamut (Ultimate)Dungeon route indexTrial and raid routeGuides hub