Primordial Sentinel - World Boss Guides

Primordial Sentinel (Glorious Sentinel) Strategy

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.

Guide version:

Skills Overview

Recommended Characters

Phase 1: Primordial Sentinel

Iota Stella : for
Notia Fran : for
Valentine : for both and
Dianne Demiurge Delta Saeran Tio Nella Astei : Healer with

Phase 2: Glorious Sentinel

Monad Eva Viella : Healer with
Demiurge Luna Regina : Mage with on their S1.
Drakhan Gnosis Dahlia Demiurge Stella : Striker with on their S1.
Demiurge Drakhan : Defender with on their S1.
Gnosis Beth : pushes her whole team with her DoT
Kuro Demiurge Vlada Gnosis Viella: can remove from the boss.
Akari : can prevent the boss from gaining .
Skadi : cycles your skills CD faster with .

Recommended Team

Iota

Valentine

Stella

Notia

Fran

Nella

Dianne

Demiurge

Delta

Saeran

Tio

Astei

Strategy Tips

General Strategy

This entire fight revolves around priority control. In Phase 1, you can reduce the boss's priority unlike in Phase 2, so you need to abuse it as much as possible.
In Phase 2, however, the boss is immune to priority reduction, so you will need to make your characters as fast as possible.
Everything will depend on Skill Chains and CP generation, so equip your Sage and Rogue charms (don't forget your critical hit chance for Rogue).
In both phases, you want at least 1 healer for the thanks to the buff.
Quick tip : if you have Monad Eva at 6 stars in your second team you can stack up CP in phase 1. Swap to Team 2 when you're close to finishing phase 1 and trigger phase 2. Monad Eva will instantly the boss allowing you to keep the CP you built during phase 1.

Showcase Video

Note : This video showcases an SSS Extreme clear. The same strategy can be applied to lower difficulties, but certain boss mechanics may be weakened or disabled. As the score is not unlimited before Extreme League, this requires less focus on building chain points in phase 1, you can use them freely.

Primordial Sentinel - World Boss - SSS - Extreme League

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