
Cabal of Tranquility
Main Will · Sub Intellect
Xaihi is Cryo and Arts-side buffing that Arcane, Last Rite, and Yvonne teams assume when those carries are the goal. She is not a generalist filler; she is the buffer you add when those specific comps are what you are building. Pull to make those teams real; pass if you are not building Arcane, Last Rite, or Yvonne.
Xaihi is a 5★ Cryo Support (Arts Unit). Xaihi is a Cryo Support Operator who specializes in HP Treatment (Healing) and can apply Cryo Infliction.
Weapon
Freedom to Proselytize
Freedom to Proselytize is Xaihi's signature weapon, greatly boosting her raw output by increasing her Main attributes and healing, with an additional HP treatment effect for the Controlled Operator. While it is a purely defensive option, the extra healing can be very nice on Operators that want to take damage on purpose, or are more vulnerable to taking damage due to long animations or always being in melee.
Gear Set
LYNX
The LYNX set bonus grants the wearer a sizeable HP Treatment Efficiency boost. Additionally, when overhealing by restoring more HP than the character was missing, she provides a sizable damage mitigation effect to them.
Main Stats
Body Will · Hands Will / HP · Kits Arts Intensity / Will
Priority
Substats
Will > Arts Intensity > HP%
Priority

LYNX Cuirass
Will, Intellect, Treatment Bonus

Eternal Xiranite Wraps
Will, Intellect, Ultimate Gain Efficiency

LYNX Slab
Will, Intellect, Main Attribute (Will)

LYNX Slab
Will, Intellect, Main Attribute (Will)
From our experience, Xaihi is best played as a support unit that’s applying HP Treatment (Healing) and Cryo Infliction.
Level after higher priorities — supports the combo skill role in the rotation.
Level after higher priorities — supports the basic attack role in the rotation.
Finish after core combat skills are comfortable.
Xaihi is a Cryo Support Operator who specializes in HP Treatment (Healing) and can apply Cryo Infliction.
Her Battle Skill Distributed DoS is central to her playstyle, summoning an Auxiliary Crystal that orbits the controlled operator.
Use these notes as the operator priority order inside the comps above.

Will Boost [M] · Treatment Efficiency Boost [M]
Main Attribute +5/9/14%. When the wielder's battle skill provides HP treatment, the controlled operator is restored for another [60/108/168 + WillÃ0.5/0.9/1.4] HP. Effect only triggers once every 15.00s.
Why it works —Freedom to Proselytize is Xaihi's signature weapon, greatly boosting her raw output by increasing her Main attributes and healing, with an additional HP treatment effect for the Controlled Operator. While it is a purely defensive option, the extra healing can be very nice on Operators that want to take damage on purpose, or are more vulnerable to taking damage due to long animations or always being in melee.

Main Attribute Boost [L] · Arts Intensity Boost [L]
Secondary Attribute +10/18/28%. When the wielder applies an Arts Burst, target enemy suffers Arts DMG Taken +9/16.2/25.2% for 15.00s. Effects of the same name cannot stack.
Why it works —A DPS Support option for Xaihi. This weapon will help scale her Intellect to boost the Cryo Amp and Nature Amp effects from her Stack Overflow Ultimate.

Intellect Boost [M] · ATK Boost [M]
Max HP +10/18/28%. When the wielder casts an ultimate, operators whose elements differ from the wielder gain ATK +8/14.4/22.4% for 20.00s. Effects of the same name cannot stack.
Why it works —Another DPS Support option for Xaihi. Similar to the Detonation Unit, it provides boosts to her Cryo Amp and Nature Amp effects via main-stat scaling, while also granting operators of other elements an ATK bonus.

Will Boost [L] · HP Boost [L]
Treatment Efficiency +10/18/28%. After the wielder's skill provides HP treatment, the entire team gains ATK +9/16.2/25.2% for 15.00s. Effects of the same name cannot stack.
Why it works —Chivalric Virtues increases HP Treatment (Healing) Efficiency, and grants the entire team an Attack% bonus whenever they restore HP. This is a perfect choice for a supportive character like Xaihi, acting as not just a sustain, but also helping boost the team's damage output.

LYNX is Xaihi's BiS. Treatment Efficiency directly scales her heals, and overheal converts into DMG Reduction for the ally — exactly what a dedicated healer wants.

LYNX Cuirass
Will, Intellect, Treatment Bonus

Eternal Xiranite Wraps
Will, Intellect, Ultimate Gain Efficiency

LYNX Slab
Will, Intellect, Main Attribute (Will)

LYNX Slab
Will, Intellect, Main Attribute (Will)

Eternal Xiranite is the amp-leaning backup. Lean on it when you value her Battle Skill/Ultimate Amp uptime and team Cryo/Nature buffs over raw heal potency.

Eternal Xiranite Light Armor
Will, Intellect, Ultimate Gain Efficiency

Eternal Xiranite Wraps
Will, Intellect, Ultimate Gain Efficiency

Eternal Xiranite Bracing Slab
Will, Intellect, Ultimate SP Gain

Eternal Xiranite Auxiliary Arm
Will, Intellect, Ultimate SP Gain
Xaihi buffer seat: Arcane damage/setup, Tangtang stop, Gilberta Susceptibility — Xaihi's Amp makes those dumps count.

Xaihi is the Cryo/Arts buffer — Amp and element buffs so Arcane, Last Rite, or Yvonne dumps are real.
Arcane either dumps Nature/Cryo damage in INT form or groups and applies Susceptibility in WILL form. Beside Xaihi, she is the setup/burst flex that creates a clean window to spend.
Tangtang's Ultimate is a full-screen time-stop. Cast it so Xaihi (and the rest of the squad) can dump skills safely without the wave moving out of position.
Gilberta applies Arts Susceptibility and Nature enablement, then amps the dump with her Ultimate. She is the premium Arts support seat next to Xaihi.
BASIC ATTACK: An attack with up to 5 sequences that deals Cryo DMG. As the controlled operator, Final Strike also deals 15 Stagger. DIVE ATTACK: Basic attack performed in mid-air becomes a dive attack that deals Cryo DMG to nearby enemies. FINISHER: Basic attack performed near a Staggered enemy becomes a finisher that deals massive Cryo DMG and recovers some SP.
SKILL DESCRIPTION: Summons an Auxiliary Crystal that orbits the controlled operator for a while. After the controlled operator performs a Final Strike on the enemy, the Auxiliary Crystal will restore the said operator's HP. This effect can trigger 2 times. The attribute of Will increases the amount of HP treatment. When the controlled operator is already at Max HP when triggering the HP restoration, grant the said operator a temporary Arts Amp as well. This effect cannot stack.
COMBO TRIGGER: When the Auxiliary Crystal uses up its HP treatments. SKILL DESCRIPTION: Quickly charges up the Auxiliary Crystal and launches it at the enemy to deal Cryo DMG and Cryo Infliction.
SKILL DESCRIPTION: Applies temporary Cryo Amp and Nature Amp to the entire team. The attribute of Intellect increases the Amp effect.
Operator Will +10. / Operator Will +15. / Operator Will +15. / Operator Will +20.
Combo skill Stress Testing improved: Hitting an enemy with Cryo Infliction or Solidification also causes the enemy to suffer Cryo DMG Taken +10% for 5s. This effect cannot stack.
Ultimate Stack Overflow improved: The ultimate also dispels Cryo Infliction and Solidification from the entire team.
Arts Amp granted by the Auxiliary Crystal is increased by another 5%.
Is it worth getting?
Nice quality-of-life node. Keep if free; do not spend special pulls chasing it.
Ultimate Stack Overflow improved: Ultimate Energy cost -10%.
Is it worth getting?
Strong early potential — improves a skill you already cast every rotation.
Combo skill Stress Testing improved: When hitting the target, the hit chains 1 time to 1 additional target nearby.
Is it worth getting?
Nice quality-of-life node. Keep if free; do not spend special pulls chasing it.
Intellect +15, Treatment Efficiency +10%.
Is it worth getting?
Nice quality-of-life node. Keep if free; do not spend special pulls chasing it.
Ultimate Stack Overflow improved: Amp effect is increased to 1.1 times the original.
Is it worth getting?
Solid damage / uptime node. Grab it when duplicates show up; do not hard-pity for it.
P0 clears content. First meaningful duplicate target is P2 if you are already investing. First stop: P2. Endgame target: P5.
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