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Ksai

By Shiraen · Updated Nov 29, 2025

Ksai is a Fire Ranger boss that heavily favors Water units. Non-Water units suffer Attack and Defense penalties, while the entire team receives Debuff Enhancement. The DoT cap makes Curse and fixed damage strategies less effective, limiting damage to 5k per tick. This boss can be cleared in a single run with proper Water-focused team composition.

Ksai

Ksai

firerangerLv. 115

Immunities

7,330Attack
3,413Defense
601,112Health
169Speed
17.6%Crit Chance
150%Crit DMG
0%Crit DMG Reduc
0%Penetration
17.2%DMG Increase
11.5%DMG Reduction
115Effectiveness
148Resilience
WG43WG

Skills

Command: Restrain

All Enemies

Attacks all enemies, and recovers Health of the caster by 40%.

Command: Incapacitate

CD 5All Enemies

(Triggered Effect) After using Command: Restrain, when the caster's Health is 70% or higher, activates an additional attack on all enemies. After attacking, grants increased Defense to the caster for 4 turn(s). This effect cannot be removed.

Command: Destroy

CD 3All Enemies

Attacks all enemies, and inflicts reduced Attack on the target for 2 turn(s). This attack ignores the target's Immunity and Resilience, and cannot be removed. After attacking, grants an extra turn.

Terminal: Protect Weakness

(Passive Effect) Always grants Buff Enhancement. This effect cannot be removed. Always inflicts Debuff Enhancement on all enemies. This effect cannot be removed. If Health is greater than 70%, does not take Weakness Gauge damage. Damage from Cursed/fixed damage does not exceed 5000. Reduces Attack/Defense of non-WaterWater enemies.

Enraged

All Allies

Becomes Enraged when Health drops to 60% of Max Health or lower. Enraged: Grants an irremovable effect to the caster that increases Attack and reduces damage taken for 3 turns. Enraged lasts for 3 turns. Command: Terraform: Used when Enraged ends. Deals lethal damage to all enemies. If enraged within 1 turn, recovers 100 Chain Points.

Tactical Tips

  • Non-WaterWater units suffer and penalties.
  • Team receives , boss has .
  • Boss is immune to until HP drops below 70%.

Recommended Characters

Tamarawaterranger

Tamara

WaterWater support unit with .

Summer Knight's Dream Emberwaterdefender

Summer Knight's Dream Ember

Great WaterWater support unit with and .

FortunawatermageEdelweisswaterrangerDemiurge VladadarkrangerSteropedarkdefender

Fortuna, Edelweiss, Demiurge Vlada, Sterope

options.

Team 1 – Reliable Clear

Tamara
water
ranger
Tamara
Caren
water
striker
Caren
Poolside Trickster Regina
water
striker
Poolside Trickster
Regina
Sterope
dark
defender
Sterope

Demiurge Vlada is mainly here for her debuffs. She can survive the first S1, and the boss shouldn't reach a second action.

Combat Footage

Ksai — Stage 10 — 1 run clearby ダイス