Xaihi

endgame support

supporthealerbufferampcryoinfliction

Xaihi is rated at the very top of support units because she layers several buffs at once: an Arts Amp from her crystal, Cryo and Nature Amp from her Ultimate, and a Cryo damage-taken debuff from her talent. On top of that she keeps the party healthy and applies Cryo Infliction for teammates to exploit, which makes her a core pick for Cryo and Nature squads.

Xaihi's endgame support setup abandons set bonuses entirely and stacks raw stats instead. Chivalric Virtues carries her healing through the Medicant buff, which her Battle Skill can trigger on its own, so the attack boost reaches whichever damage dealer she is healing. Redeemer Armor and Rift Trekker Gloves supply Intellect and Ultimate Gain, while two Frontiers Extra O2 Tube kits fill out the stat budget. Since she usually shares a team with another Eternal Xiranite user, that buff is already covered elsewhere and she gains more from pure Intellect and Ultimate Gain. In lobbies without a second Xiranite holder, switch to the Eternal Xiranite set with a Redeemer Armor off-piece so she brings the team damage buff herself. Junction Point, Detonation Unit and Monaihe are viable weapon swaps depending on rotation and availability.

Insights

Core Mechanics

The Distributed DoS battle skill summons an Auxiliary Crystal that heals the controlled operator whenever they land a Final Strike, triggering twice per cast, with the healing amount driven by Will.
If the crystal's heal would push the operator past max HP, the overflow is converted into an Arts Amp instead; the operator does not need to already be at full HP to receive it.
Once both heal charges are used the crystal powers up, enabling Stress Testing, which deals Cryo damage and applies Cryo Infliction to the target.
Stack Overflow gives the whole team temporary Cryo and Nature Amp; the base value scales with skill rank while Intellect adds extra Amp, capped at 30%.
Execute Process makes her Combo Skill raise the Cryo damage taken by enemies suffering Cryo Infliction or Solidification, and Freeze Protocol lets the Ultimate cleanse those same debuffs from allies.

Scaling

Healing scales with Will, so Will boosts are the main way to keep the controlled operator topped up through her crystal.
Her Ultimate's Amp scales with Intellect, and the extra portion is capped at 30%, so Intellect stacking translates fairly directly into team damage.
Her personal damage stays low; meaningful output only appears in comps and rotations that can use her Infliction and Amp windows.
She ramps up cheaply: the free 6-star weapon and a starter set get her functional well before premium gear is available.

Team Role

Xaihi is an off-field support who wants to be played as a teammate rather than the controlled operator. Her job is to keep the active character alive with the Auxiliary Crystal while layering Amp buffs onto the whole squad. She fits best in Cryo or Nature compositions, where her Ultimate's Cryo and Nature Amp and her Cryo Infliction directly feed the damage dealers' reactions. Rotation wise, you want the controlled operator landing Final Strikes so the crystal's two heals are consumed and Stress Testing becomes available, then you fire Stack Overflow as a burst window opens. Because the Eternal Xiranite set effect does not stack, she is often the second Xiranite-capable support in a team and instead builds raw Intellect and Ultimate Gain so the other holder supplies the set buff. She pairs naturally with teammates who punish Infliction or Solidification, since her talent raises their Cryo damage taken.

Weapon

chivalric_virtuesBest

6★ Wand

junction_pointRank 2

6★ Wand

detonation_unitRank 3

6★ Wand

monaiheRank 4

5★ Wand

Weapon Stat Priority

medicantwill_boosthp_boost

Gear

no set effectstat_stacking

Pieces

armor

redeemer armor

gloves

rift trekker gloves

core 1

core 2

Stat Priority

1intellect_boost2ultimate_gain_boost

Explanation

Chivalric Virtues is the default pick because her healing can self-trigger its Medicant attack buff, letting the boost reach any team that rotates through her Battle Skill.

Junction Point is a solid replacement that raises Ultimate uptime and Amp potency with Intellect and Ultimate Gain, though its own attack buff rarely sticks because she usually uses her Combo Skill after that window has closed.

Detonation Unit can out-damage both options when the Detonate skill actually fires, which depends on composition and rotation timing, such as teams with Tangtang or Last Rite; in slower rotations it underperforms.

Monaihe is the fallback when nothing better is available, mainly improving Ultimate uptime and Battle Skill healing.

The gear plan takes Redeemer Armor, Rift Trekker Gloves and two Frontiers Extra O2 Tube kits with no set effect active, trading group buffs for raw Intellect and Ultimate Gain.

For teams with no other Eternal Xiranite user, swapping to the Eternal Xiranite set with a Redeemer Armor off-piece gives up a little Ultimate Gain and Amp in exchange for handing out the set's team damage buff herself.

Notes

This setup deliberately ignores set bonuses and just piles on Intellect and Ultimate Gain.
Chivalric Virtues is favoured because its Medicant effect can be triggered by her own Battle Skill healing, so the attack buff lands on whoever she is healing.
Because she is normally run alongside another Eternal Xiranite holder, leaving that set to the other support and stacking stats here yields more value.
Weapon choice is flexible: Junction Point gives a large Ultimate Gain and Intellect package, Detonation Unit trades consistency for higher team damage, and Monaihe is the budget fallback.