The Primordial Sentinel is a challenging two-phase world boss that requires precise team coordination and timing. This guide covers strategies for defeating this boss up to the Extreme League.
Primordial Sentinel
Dark
MageLv.80Immunities
Repulsor Beam
Attacks an enemy, then has a 100% chance to increase Critical Hit Chance of the caster for 2 turn(s).
Quasar Bombardment
Attacks all enemies. For each target damaged, reduces Chain Points of enemies by 5. When the enemy is inflicted with Shocked, additionally reduces Chain Points by 20 each.
Particle Disintegration
Attacks all enemies, and has a 100% chance to inflict Shocked on the target for 2 turn(s). This attack ignores the target's Immunity.
When scoring a critical hit, grants Core Energy to the caster for 1 turn(s).
Primordial Weapon
(Passive Effect)
Increases damage taken from 
Fire, 
Water, and 
Earth enemies.
Inflicts Dual Attack Disabled on all enemies, and reduces Speed of 
Light and Dark enemies. This effect cannot be removed until the Boss is killed.
Reduces damage taken from skills other than Burst Skills and Skill Chains, and reduces Weakness Gauge damage taken by 50%.
Greatly reduces damage taken from Light and Dark enemies, and does not take Weakness Gauge damage.
Totalizing Degradation!
(Passive Effect) Grants Courage Against Despair to the enemy team. Grants a special effect to the enemy team based on their class.
Striker: +50% Priority recovery efficiencyMage: Increased damage
Defender: Inflicts reduced Defense on the Boss for 4 turns when performing an action
Ranger: Inflicts reduced Resilience on the Boss for 4 turns when performing an action
Healer: Inflicts reduced Speed on the Boss for 4 turns when performing an action.
(Triggered Effect) After using Repulsor Beam and Quasar Bombardment, when granted Core Energy, attacks all enemies. After attacking, grants increased Speed for 5 turn(s).
Glorious Sentinel
LightMageLv.110Immunities
High-Intensity Repulsor Beam
Attacks an enemy. When the enemy is inflicted with a debuff, scores a critical hit.
Meteor Shower
Attacks all enemies. When the target is inflicted with Shocked, inflicts reduced Attack for 2 turn(s). This effect cannot be removed.
Supernova Explosion
Attacks all enemies, and has a 100% chance to inflict Shocked on the target for 2 turn(s). This attack ignores the target's Immunity.
After attacking, grants Core Energy to the caster for 1 turn(s).
Heir of Glory
(Passive Effect)
Increases damage taken from Light and Dark enemies. Reduces Speed of Fire, Water, and Earth enemies. This effect cannot be removed.
Reduces damage taken from skills other than Burst Skills, Dual Attacks, and Skill Chains, and does not take Weakness Gauge damage.
Greatly reduces damage taken by Fire, Water, and Earth enemies, and does not take Weakness Gauge damage.
Damage from Cursed/fixed damage does not exceed 30000.
For the Glory of Old!
(Passive Effect) Grants Courage Against Despair to the enemy team. Grants a special effect to the enemy team based on their class.Striker: Increased damageMage: +50% Priority recovery efficiencyDefender: Inflicts reduced Defense on the Boss for 4 turns when performing an actionRanger: Reduces Health of the Boss by 3% when performing an actionHealer: Inflicts reduced Speed on the Boss for 4 turns when performing an action.
(Triggered Effect) After using High-Intensity Repulsor Beam and Meteor Shower, when granted Core Energy, attacks all enemies.
After attacking, grants increased Speed for 5 turn(s), and fully reduces Chain Points of enemies.
Strategy
- •This entire fight revolves around priority control. In Phase 1, abuse priority reduction as much as possible.
- •In Phase 2, the boss is immune to priority reduction - make your characters as fast as possible.
- •Equip Sage and Rogue charms for Skill Chains and CP generation (don't forget critical hit chance for Rogue).
- •In both phases, bring at least 1 healer for the thanks to the buff.
Phase 1 — Recommended Characters
Phase 2 — Recommended Characters
Mage with on S1.
Drakhan, Gnosis Dahlia, Demiurge Stella
Striker with on S1.
Defender with on S1.
Pushes team priority with her DoT .
Kuro, Demiurge Vlada, Gnosis Viella
Can remove from the boss.
Can prevent the boss from gaining .
Cycles skill cooldowns faster with .
Suggested Teams
Phase 1
