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Arknights: Endfield
Arknights: Endfield
Xaihi
Operator File

Xaihi

Cryst SUPPORTER Wand

Banner

Chivalric Virtues

Build Guide

Stat Priority

Will
Intellect
Health
Defense

Skill Leveling Priority

Ultimate
Battle Skill
Combo Skill
Basic Attack

Skills

Cooldown

Cooldown

Basic

BASIC ATTACK: An attack with up to 5 sequences that deals <@ba.cryst>Cryo DMG</>. As the controlled operator, <#ba.lastcombo>Final Strike</> also deals <@ba.poise>{poise:0}</> Stagger. DIVE ATTACK: Basic attack performed in mid-air becomes a dive attack that deals <@ba.cryst>Cryo DMG</> to nearby enemies. FINISHER: Basic attack performed near a Staggered enemy becomes a finisher that deals massive <@ba.cryst>Cryo DMG</> and recovers some SP.

Scaling: BATK SEQ 1 Multiplier: 15% / 17% / 18% / 20% / 21% / 23% / 24% / 26% / 27% / 29% / 31% / 34% | BATK SEQ 2 Multiplier: 16% / 18% / 19% / 21% / 22% / 24% / 26% / 27% / 29% / 31% / 33% / 36% | BATK SEQ 3 Multiplier: 21% / 23% / 25% / 27% / 29% / 32% / 34% / 36% / 38% / 40% / 44% / 47% | BATK SEQ 4 Multiplier: 33% / 36% / 40% / 43% / 46% / 50% / 53% / 56% / 59% / 64% / 68% / 74% | BATK SEQ 5 Multiplier: 55% / 61% / 66% / 72% / 77% / 83% / 88% / 94% / 99% / 106% / 114% / 124% | Finisher ATK Multiplier: 400% / 440% / 480% / 520% / 560% / 600% / 640% / 680% / 720% / 770% / 830% / 900% | Dive ATK Multiplier: 80% / 88% / 96% / 104% / 112% / 120% / 128% / 136% / 144% / 154% / 166% / 180%Cryst
Distributed DoS

Distributed DoS

Battle

Summons an <@ba.key>Auxiliary Crystal</> that orbits the controlled operator for a while. After the controlled operator performs a <#ba.lastcombo>Final Strike</> on the enemy, the <@ba.key>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 <#ba.spellenhance>Arts Amp</> as well. This effect cannot stack.

Scaling: Base Treatment: 144 / 173 / 202 / 230 / 245 / 259 / 274 / 288 / 302 / 310 / 317 / 324 | Treatment Increase per Will: 0.34 / 0.4 / 0.47 / 0.54 / 0.57 / 0.6 / 0.64 / 0.67 / 0.71 / 0.72 / 0.74 / 0.76 | Auxiliary Crystal Duration (s): 20 / 20 / 20 / 20 / 20 / 20 / 20 / 20 / 20 / 20 / 20 / 20 | Arts Amp: 9% / 9% / 9% / 9% / 9% / 11% / 11% / 11% / 13% / 13% / 13% / 15% | Arts Amp Duration (s): 25 / 25 / 25 / 25 / 25 / 25 / 25 / 25 / 25 / 25 / 25 / 25Cryst
Stack Overflow

Stack Overflow

Ultimate

Applies temporary <#ba.crystenhance>Cryo Amp</> and <#ba.naturalenhance>Nature Amp</> to the entire team. The attribute of Intellect increases the Amp effect.

Scaling: Base Cryo Amp: 11% / 12% / 13% / 14% / 15% / 16% / 17% / 18% / 19% / 21% / 22% / 24% | Base Nature Amp: 11% / 12% / 13% / 14% / 15% / 16% / 17% / 18% / 19% / 21% / 22% / 24% | Amp Increase per Intellect: 0.014% / 0.015% / 0.016% / 0.018% / 0.019% / 0.02% / 0.022% / 0.023% / 0.024% / 0.026% / 0.028% / 0.03% | Intellect raises Amp limit: 30% / 30% / 30% / 30% / 30% / 30% / 30% / 30% / 30% / 30% / 30% / 36% | Duration (s): 12 / 12 / 12 / 12 / 12 / 12 / 12 / 12 / 12 / 12 / 12 / 12Cryst
Stress Testing

Stress Testing

Combo

COMBO TRIGGER: When the <@ba.key>Auxiliary Crystal</> uses up its HP treatments. Quickly charges up the <@ba.key>Auxiliary Crystal</> and launches it at the enemy to deal <@ba.cryst>Cryo DMG</> and <#ba.crystinflict>Cryo Infliction</>.

Scaling: DMG Multiplier: 200% / 220% / 240% / 260% / 280% / 300% / 320% / 340% / 360% / 385% / 415% / 450% | Stagger: 10 / 10 / 10 / 10 / 10 / 10 / 10 / 10 / 10 / 10 / 10 / 10 | Ultimate Energy Gain: 10 / 10 / 10 / 10 / 10 / 10 / 10 / 10 / 10 / 10 / 10 / 10Cryst
Standardized Scripting α

Standardized Scripting α

Talent

Assign to Manufacturing Cabin to grant operator EXP material production efficiency +10%

Standardized Scripting β

Standardized Scripting β

Talent

Assign to Manufacturing Cabin to grant operator EXP material production efficiency +20%

Murmuring Session α

Murmuring Session α

Talent

Assign to Reception Room to grant operators a small Clue 5 Rate-UP: Cabal of Tranquility (activates upon assignment; effects of the same type cannot stack)

Freeze Protocol

Freeze Protocol

Talent

Ultimate <@ba.key>Stack Overflow</> improved: The ultimate also <#ba.dispel>dispels</> <#ba.crystonchar>Cryo Infliction</> and <#ba.frozenonchar>Solidification</> from the entire team.

Murmuring Session β

Murmuring Session β

Talent

Assign to Reception Room to grant operators Clue 5 Rate-UP: Cabal of Tranquility (activates upon assignment; effects of the same type cannot stack)

Execute Process

Execute Process

Talent

Combo skill <@ba.key>Stress Testing</> improved: Hitting an enemy with <#ba.crystinflict>Cryo Infliction</> or <#ba.frozen>Solidification</> also causes the enemy to suffer <@ba.cryst>Cryo DMG Taken</> <@ba.vup>+10.0%</> for <@ba.vup>5</>s. This effect cannot stack.

Execute Process

Execute Process

Talent

Combo skill <@ba.key>Stress Testing</> improved: Hitting an enemy with <#ba.crystinflict>Cryo Infliction</> or <#ba.frozen>Solidification</> also causes the enemy to suffer <@ba.cryst>Cryo DMG Taken</> <@ba.vup>+7.000000000000001%</> for <@ba.vup>5</>s. This effect cannot stack.

Team Compositions

Cryo Arts Healer Support

Xaihi

Xaihi

Support or Buffer Units (e.g. Zhuang Fangyi, Tangtang)

Support or Buffer Units (e.g. Zhuang Fangyi, Tangtang)

Leverage Xaihi's healing and Arts Amp for sustained team damage.

Early Game Healer Build

Xaihi

Xaihi

N/A

N/A

Focus on Will and HP to establish early presence.

Insights

Summary

A Cryo Supporter that uses an orbiting crystal to reward combo execution with healing and elemental amplification.

Playstyle

Controls a floating Auxiliary Crystal to convert combos into team healing and apply Cryo Amp. Sustains the team via finisher-based HP recovery while enabling Cryo/ Nature damage boosts.

Difficulty

Medium

Pros

  • +Self-sustaining healing that scales with team damage output.
  • +Dual elemental Amp support that benefits the entire team.
  • +Flexible early- and late-game presence through HP-based thresholds.

Cons

  • −Healing tied to combo execution; missing finishers reduces sustain.
  • −Auxiliary Crystal can be lost if the controlled operator is crowd-controlled.
  • −Support role relies on consistent combo uptime to trigger full potential.

Tips

  • Weave basic attacks to keep the crystal active and refresh healing windows.
  • Maintain high Will to increase restoration magnitude and Arts Amp strength.
  • Plan rotations so that Hitting Cryo Inflicted triggers Execute Process sooner.

Common Mistakes

  • !Prioritizing basic-attack damage over combo execution delays healing and Amp triggers.
  • !Neglecting HP thresholds leaves you unable to trigger Max-HP Arts Amp windows.

Synergy Notes

  • Pair with Cryo Art dealers to exploit the extended Cryo Amp duration.
  • Buffer units that provide HP or Energy regeneration smooth out crystal cooldowns.
  • Team comps with staggered-control sources trigger Stress Testing reliably.