What attribute is Xaihi?

Xaihi is a 5-star Cryo operator of the Supporter class, from Cabal of Tranquility, wielding a Arts Unit, released in version 1.0.

What stat does Xaihi scale on?

Xaihi's skills multiply ATK. That is read from the scaling rows on the Battle Skill and Ultimate, not from the skill description, so it reflects what the game actually multiplies rather than what the text mentions.

What is the best weapon for Xaihi?

Detonation Unit is the closest fit on the data: it is a 6-star Arts Unit with 490 base ATK at level 90, and its skills act on ATK. Fluorescent Roc is the best 4-star alternative.

Which gear set should Xaihi use?

Eternal Xiranite. Its 3-piece effect is: 3-piece set effect: Wearer's HP +1000. After the wearer applies Amp, Protected, Susceptibility, or Weakened, other teammates gain DMG Dealt +16% for 15s. This effect cannot stack. The 3-piece effect is the only set bonus a gear set has, and it needs three matching pieces; an operator equips four in all (Armor, Gloves and two Kits), so the fourth is free for an off-set piece.

How much does it cost to max Xaihi's skills?

Taking one combat skill from level 1 to 12 costs 172,200 T-Creds and 21× Blighted Jadeleaf among other materials. The Materials tab lists every item per level.

What does Xaihi P1 do?

Agile Execution: Arts Amp granted by the Auxiliary Crystal is increased by another 5%.

Xaihi, Cryo Supporter operator | Arknights: Endfield

All operators

Cabal of Tranquility

Xaihi

Build guide · Arknights: Endfield

CryoSupporterArts UnitSupport

English voice: Elsie Lovelock

The best Xaihi build in Arknights: Endfield (Version 1.5) is Detonation Unit with Eternal Xiranite. Updated September 20, 2026

Key facts

The best Xaihi build in Arknights: Endfield (Version 1.5) is Detonation Unit with Eternal Xiranite. 5-star Cryo Supporter operator.

Rarity: 5★
Attribute: Cryo
Class: Supporter
Weapon type: Arts Unit
Faction: Cabal of Tranquility
Released: Version 1.0 · 2026-01-22
Best weapon: Detonation Unit
Core set: Eternal Xiranite
Tier list: T0

Where these rankings come fromThe weapon order, gear sets and Potential verdicts on this tab are prydwen.gg’s, measured in play and condensed to a sentence each. Relative damage figures are ratios against the bottom of each ranking, not absolute numbers, and each one holds only for the Potential and team its row states. Everything else (base stats, skill text, material totals) is read from the game’s own data.

Weapons

3 ranked

BISDetonation Unit

Ranked first at P0

Detonation Unit boosts enemies' Arts DMG Taken and its Secondary Attribute% raises her Ultimate's Amp, but triggering Arts Burst needs Cryo Infliction from her Combo Skill, awkward if she's the only source or rotations run short.

490

Base ATK · lv 90

50 at lv 1

Ranked first at P0

#2Chivalric Virtues

Ranked #2 at P0

As Xaihi's Signature, Chivalric Virtues suits her passives and grants a sizable team-wide ATK% buff whenever her Battle Skill heals, which in most of her teams happens constantly, making it close to a permanent Attack buff for the squad.

485

Base ATK · lv 90

49 at lv 1

Ranked #2 at P0

#3Stanza of Memorials

Ranked #3 at P5

Stanza of Memorials is a niche fallback with suitable stats, granting non-Cryo Operators a long ATK% buff after Xaihi's Ultimate, but since it can't buff other Cryo Operators, it only suits her when she's supporting a Nature team.

411

Base ATK · lv 90

42 at lv 1

Ranked #3 at P5

Gear

1 sets

CoreEternal Xiranite

The three-piece Eternal Xiranite set is Xaihi's consistent choice, giving the team a 15% DMG Bonus on Final Strikes from her Skill's Auxiliary Crystal or on her Ultimate, and its high Secondary Attribute% suits her Intellect scaling.

3PC3-piece set effect: Wearer's HP +1000. After the wearer applies Amp, Protected, Susceptibility, or Weakened, other teammates gain DMG Dealt +16% for 15s. This effect cannot stack.

No Set: If another ally already triggers the non-stacking Eternal Xiranite buff, no set can work better, since Secondary Attribute% multiplies the Intellect behind Xaihi's Ultimate Amp, though it costs Ultimate Gain Efficiency and any set bonus.

Skill priority

Off Field

#1
ULTIMATE
Max first
#2
BATTLE SKILL
Then
#3
COMBO SKILL = BASIC ATTACK
Next

Best Potentials

3 worth pulling

P1Agile Executionworth pulling
P2Link Aggregationworth pulling
P3Mapping Node
P4Grayscale Release
P5Controlled Recursionworth pulling

P1Top pick
Agile Execution
This Potential adds 5% to the Arts Amp from Xaihi's Battle Skill, strengthening her support for the main carry and raising team damage in hyper carry compositions, and the bonus is additive, so a 15% Amp buff becomes 20%.
In game
Arts Amp granted by the Auxiliary Crystal is increased by another 5%.
P2
Link Aggregation
Link Aggregation cuts Xaihi's Ultimate cost by 10%, from 80 energy to 72, making it easier to reach and keeping her strongest Amp effects active for more of the team's burst windows.
In game
Ultimate Stack Overflow improved: Ultimate Energy cost -10%.
P5
Controlled Recursion
Controlled Recursion multiplies the Ultimate's Cryo and Nature Amp effects by a unique 1.1 times, giving the team a few extra Amp percentage points and a modest bump to overall damage.
In game
Ultimate Stack Overflow improved: Amp effect is increased to 1.1 times the original.

Every Potential Xaihi has, in full, is on the Kit tab. This is only which of them are worth the pulls.

Teams

4 teams

Arcane team

Nature · CorrosionPlays Supporter · Amp and HP treatment

Arcane self-sustains her own Corrosion, so this team spends its other three slots on Amp and healing rather than on a second Nature source. Tangtang lays the Cryo her infliction consumes, and Xaihi’s buffs do more for the total damage than a fourth attacker would.

ArcaneMain DPS · Corrosion trigger
TangtangCryo infliction to stack
Xaihi, this operatorSupporter · Amp and HP treatment
AkekuriVanguard · SP

Last Rite team

Cryo · SolidificationPlays Supporter · Amp and HP treatment

Last Rite is the Solidification carry every account can reach without a Chartered banner, and Tangtang covers the mob clear her own kit is thin on. Xaihi’s Amp is high enough that Prydwen credits much of this team’s damage to her buffs rather than to Last Rite’s own numbers.

Last RiteMain DPS · Solidification trigger
Xaihi, this operatorSupporter · Amp and HP treatment
TangtangCryo infliction to stack
PerlicaElectric infliction to stack

Typhoeus team

Nature · sustained Arts BurstPlays Supporter · Amp and HP treatment

Typhoeus deals her damage over a sustained Arts Burst rather than a single spike, which suits exactly two enemies on the field and less anywhere else. Prydwen debuted the team at T0.5 and is still watching how it holds up against faster single-target squads.

TyphoeusMain DPS · sustained Arts Burst
PerlicaElectric infliction to stack
ArcaneEnabler · groups enemies and duplicates Inflictions
Xaihi, this operatorSupporter · Amp and HP treatment

Yvonne team

Cryo · Solidification into ShatterPlays Supporter · Amp and HP treatment

Yvonne’s Solidify plus crit still Shatters for free Physical damage through a Guard, and Tangtang’s Cryo keeps the reaction stocked, though Prydwen notes Tangtang now earns more from a Rossi rotation than from this one.

YvonneMain DPS · Solidification trigger
Xaihi, this operatorSupporter · Amp and HP treatment
GilbertaSupporter · Nature infliction and grouping
TangtangCryo infliction to stack

All teams, with every replacement

Arknights: Endfield 5★ Cryo Supporter Support

Xaihi build summary

Updated September 20, 2026

Detonation Unit tops the weapon ranking for Xaihi at P0, ahead of Chivalric Virtues and Stanza of Memorials. That order is prydwen.gg's, measured in play and condensed to a sentence each; every row of it sits under Weapons below.

Run Eternal Xiranite on Xaihi, with No Set behind it.

Skill priority is ULTIMATE >= BATTLE SKILL > COMBO SKILL = BASIC ATTACK. The Ultimate costs 80 Ultimate Energy, which is what an Ultimate Gain Efficiency target has to clear.

Xaihi plays Supporter · Amp and HP treatment in the Arcane team, alongside Arcane, Tangtang and Akekuri.

Role: Support / Sustain
Best weapon: Detonation Unit
Alternatives: Chivalric Virtues, Stanza of Memorials
Gear set: Eternal Xiranite
Skill priority: ULTIMATE >= BATTLE SKILL > COMBO SKILL = BASIC ATTACK
Best team: Arcane, Tangtang, Xaihi, Akekuri
Ultimate Energy cost: 80 Ultimate Energy
Key promotion material: 8× Bloodcap
Last updated: September 20, 2026

Skills

4 levellable

Basic

Cooldown

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 attack that deals massive Cryo DMG and recovers some SP.

Skill level

BATK SEQ 1 Multiplier: 34%
BATK SEQ 2 Multiplier: 36%
BATK SEQ 3 Multiplier: 47%
BATK SEQ 4 Multiplier: 74%
BATK SEQ 5 Multiplier: 124%
Finisher ATK Multiplier: 900%
Dive ATK Multiplier: 180%

All 12 levels

Scaling	1	2	3	4	5	6	7	8	9	10	11	12
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%

Skill

Distributed DoS

100 SP

Summons an Auxiliary Crystal that orbits the operator for a while. When the controlled operator performs a Final Strike on the enemy, the Auxiliary Crystal restores 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 instead. This effect cannot stack.

Skill level

SP Cost: 100
Base Treatment: 324
Treatment Increase per Will: 0.76
Auxiliary Crystal Duration (s): 20
Arts Amp: 15%
Arts Amp Duration (s): 25

All 12 levels

Scaling	1	2	3	4	5	6	7	8	9	10	11	12
SP Cost	100	100	100	100	100	100	100	100	100	100	100	100
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	25

Combo

Stress Testing

8s cooldown

Quickly charges up the Auxiliary Crystal and launches it at the enemy to deal Cryo DMG and Cryo Infliction. Trigger: When the Auxiliary Crystal uses up its HP treatments.

Skill level

Cooldown: 7
DMG Multiplier: 450%
Stagger: 10
Ultimate Energy Gain: 10

All 12 levels

Scaling	1	2	3	4	5	6	7	8	9	10	11	12
Cooldown	8	8	8	8	8	8	8	8	8	8	8	7
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	10

Ultimate

Stack Overflow

80 Ultimate Energy

Applies temporary Cryo Amp and Nature Amp to the entire team. The attribute of Intellect increases the Amp effect.

Skill level

Ultimate Energy Cost: 80
Base Cryo Amp: 24%
Base Nature Amp: 24%
Amp Increase per Intellect: 0.03%
MAX Amp from INT: 36%
Duration (s): 12

All 12 levels

Scaling	1	2	3	4	5	6	7	8	9	10	11	12
Ultimate Energy Cost	80	80	80	80	80	80	80	80	80	80	80	80
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%
MAX Amp from INT	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	12

Talents

4 unlocked by Elite rank

Elite 1
Stalwart
1. Elite 1
  Operator Will +10.
2. Elite 2
  Operator Will +15.
3. Elite 3
  Operator Will +15.
4. Elite 4
  Operator Will +20.
Elite 1
Execute Process
1. Elite 1
  Combo skill Stress Testing improved: Hitting an enemy with Cryo Infliction or Solidification also causes the enemy to suffer Cryo DMG Taken +7% for 5s. This effect cannot stack.
2. Elite 2
  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.
Elite 3
Freeze Protocol
1. Elite 3
  Ultimate Stack Overflow improved: The ultimate also dispels Cryo Infliction and Solidification from the entire team.
Elite 1
Outfitting
1. Elite 1
  Activate this to let the operator equip blue quality gear
2. Elite 2
  Activate this to let the operator equip purple quality gear
3. Elite 3
  Activate this to let the operator equip gold quality gear

Stat talent

Every tier taken

Will: 60

Stalwart at full unlock, summed across every tier. Elite rank gates the tiers as it gates the talents above.

Potentials

5 unlocks

P1
Agile Execution
Arts Amp granted by the Auxiliary Crystal is increased by another 5%.
P2
Link Aggregation
Ultimate Stack Overflow improved: Ultimate Energy cost -10%.
P3
Mapping Node
Combo skill Stress Testing improved: When hitting the target, the hit chains 1 time to 1 additional target nearby.
P4
Grayscale Release
Intellect +15, Treatment Efficiency +10%.
P5
Controlled Recursion
Ultimate Stack Overflow improved: Amp effect is increased to 1.1 times the original.

Full bill

T-Creds, summed from the tables below

Level 90 and every skill at 12

814,900

T-Creds 15 material lines

Elite 4 and level 90

126,100

T-Creds 7 materials · 4 steps

All 4 skills at 12

688,800

T-Creds 4× the single-skill bill

Elite promotion

Level 1 → 90 in 4 steps

Elite 1
Pink Bolete ×3
Protodisk ×8
1,600T-Creds
Elite 2
Red Bolete ×5
Protodisk ×25
6,500T-Creds
Elite 3
Protoset ×24
Ruby Bolete ×5
18,000T-Creds
Elite 4
Bloodcap ×8
D96 Steel Sample 4 ×20
Protoset ×36
100,000T-Creds

Total to level 90

126,100 T-Creds

Bloodcap

D96 Steel Sample 4

Pink Bolete

Protoset

Red Bolete

Ruby Bolete

Protodisk

Skill materials

Per skill · 4 levellable

→ 2
Kalkodendra ×1
Protoprism ×6
1,000T-Creds
→ 3
Kalkodendra ×2
Protoprism ×12
2,700T-Creds
→ 4
Chrysodendra ×1
Protoprism ×16
3,200T-Creds
→ 5
Chrysodendra ×1
Protoprism ×21
4,200T-Creds
→ 6
Chrysodendra ×2
Protoprism ×27
5,400T-Creds
→ 7
Protohedron ×6
Vitrodendra ×1
8,200T-Creds
→ 8
Protohedron ×8
Vitrodendra ×1
10,500T-Creds
→ 9
Protohedron ×15
Vitrodendra ×2
18,000T-Creds
→ 10
Blighted Jadeleaf ×3
Mark of Perseverance ×1
Quadrant Fitting Fluid ×6
Protohedron ×15
24,000T-Creds
→ 11
Blighted Jadeleaf ×6
Mark of Perseverance ×2
Quadrant Fitting Fluid ×16
Protohedron ×24
30,000T-Creds
→ 12
Blighted Jadeleaf ×12
Mark of Perseverance ×3
Quadrant Fitting Fluid ×36
Protohedron ×50
65,000T-Creds

One skill at 12

172,200 T-Creds

Blighted Jadeleaf

Mark of Perseverance

Quadrant Fitting Fluid

Chrysodendra

Kalkodendra

Protohedron

Vitrodendra

Protoprism

All 4 skills at 12

688,800 T-Creds

Blighted Jadeleaf

Mark of Perseverance

Quadrant Fitting Fluid

Chrysodendra

Kalkodendra

Protohedron

Vitrodendra

Protoprism

Teammates

Build

Banner & pulls

Xaihi banner historyHeadhunting windows that featured Xaihi

Tier list

Xaihi tier list placementPlaced T0 at Potential 0

Xaihi FAQ

What attribute is Xaihi?: Xaihi is a 5-star Cryo operator of the Supporter class, from Cabal of Tranquility, wielding a Arts Unit, released in version 1.0.
What stat does Xaihi scale on?: Xaihi's skills multiply ATK. That is read from the scaling rows on the Battle Skill and Ultimate, not from the skill description, so it reflects what the game actually multiplies rather than what the text mentions.
What is the best weapon for Xaihi?: Detonation Unit is the closest fit on the data: it is a 6-star Arts Unit with 490 base ATK at level 90, and its skills act on ATK. Fluorescent Roc is the best 4-star alternative.
Which gear set should Xaihi use?: Eternal Xiranite. Its 3-piece effect is: 3-piece set effect: Wearer's HP +1000. After the wearer applies Amp, Protected, Susceptibility, or Weakened, other teammates gain DMG Dealt +16% for 15s. This effect cannot stack. The 3-piece effect is the only set bonus a gear set has, and it needs three matching pieces; an operator equips four in all (Armor, Gloves and two Kits), so the fourth is free for an off-set piece.
How much does it cost to max Xaihi's skills?: Taking one combat skill from level 1 to 12 costs 172,200 T-Creds and 21× Blighted Jadeleaf among other materials. The Materials tab lists every item per level.
What does Xaihi P1 do?: Agile Execution: Arts Amp granted by the Auxiliary Crystal is increased by another 5%.

Xaihi

Key facts

Weapons

Gear

Skill priority

Best Potentials

Teams

Skills

Talents

Stalwart

Execute Process

Freeze Protocol

Outfitting

Stat talent

Potentials

Agile Execution

Link Aggregation

Mapping Node

Grayscale Release

Controlled Recursion

Full bill

Elite promotion

Skill materials

Related

Teammates

Build

Banner & pulls

Tier list

Xaihi FAQ