Guide
How the kit works
Set up your teammates first, then use Heaven and Earth Made Manifest to enter Lunar Phase Shift. Zibai's Normal and Charged Attacks now deal Geo DMG that other infusions cannot override. Golden Blade's Petaled Touch (NA) has up to four Normal Attack strikes; its Charged Attack spends Stamina for two sword strikes.
Build Phase Shift Radiance during Lunar Phase Shift and spend it on Spirit Steed's Stride. The Selenic Adeptus Descends grants Selenic Descent for 4s after the Elemental Skill is cast or a nearby party member triggers Moondrift Harmony. During that effect, the second hit of Spirit Steed's Stride gains damage equal to 60% of Zibai's DEF.
Use Tri-Sphere Eminence during Lunar Phase Shift to extend its current duration by 1.7s. It deals two instances of Geo DMG, with the second counted as Lunar-Crystallize Reaction DMG. At Moonsign: Ascendant Gleam, the fourth Normal Attack also adds a Geo hit counted as Lunar-Crystallize Reaction DMG.
Moonsign Benediction: The Coursing Sun and Moon converts the party's Hydro Crystallize reactions into Lunar-Crystallize. Every 100 DEF on Zibai increases its Base DMG by 0.7%, up to 14%. Layered Peaks Pierce the Clouds gives her 15% DEF per other Geo party member and 60 Elemental Mastery per Hydro party member.
Build and why
Use four pieces of Night of the Sky's Unveiling. Its two-piece bonus gives 80 Elemental Mastery. When a nearby party member triggers a Lunar Reaction while Zibai is on the field, the four-piece effect gives her 15% CRIT Rate at Nascent Gleam or 30% at Ascendant Gleam for 4s. It also raises the party's Lunar Reaction DMG by 10% per different Gleaming Moon effect; effects from Gleaming Moon cannot stack.
Husk of Opulent Dreams is an alternative. Its two-piece bonus gives 30% DEF, and its four-piece effect builds stacks that each give 6% DEF and 6% Geo DMG Bonus, up to four stacks. Geo hits build stacks while Zibai is on the field, fitting both her infusion and her DEF-based effects.
For the sands and goblet, use DEF Percentage or Elemental Mastery. For the circlet, use CRIT Rate or CRIT DMG. In substats, look for CRIT Rate, then CRIT DMG, DEF Percentage and Elemental Mastery. Account for the CRIT Rate from Night of the Sky's Unveiling when choosing the circlet.
Lightbearing Moonshard is the first weapon choice: it gives 20% DEF and, after an Elemental Skill, 64% Lunar-Crystallize DMG for 5s. Uraku Misugiri is next, giving DEF and bonuses to Normal Attack and Elemental Skill DMG that increase after a nearby active character deals Geo DMG. Light of Foliar Incision is another option: after a Normal Attack deals Elemental DMG, it increases Normal Attack and Elemental Skill DMG based on Elemental Mastery.
Leveling priority
A suggested leveling order is Elemental Skill, then Elemental Burst, then Normal Attack. Start with Heaven and Earth Made Manifest because Lunar Phase Shift and Spirit Steed's Stride are central to her field time. Tri-Sphere Eminence is another source of Geo and Lunar-Crystallize damage; Golden Blade's Petaled Touch (NA) is worth leveling for the attacks used in that mode.
For ascension, collect Glaze Lily, the Prithiva Topaz materials, Tattered Warrant, Immaculate Warrant, Frost-Etched Warrant and Remnant of the Dreadwing. Talents use the same Warrant materials, the Gold books, Ascended Sample: Queen and Crown of Insight. Ascension and talent upgrades also cost Mora.
Constellations worth it
C2 is worth considering for a larger reaction-focused upgrade. At Birth Are Souls Born, and in Death Leave But Husks gives nearby party members 30% Lunar-Crystallize Reaction DMG during Lunar Phase Shift. At Ascendant Gleam, it further increases the second hit of Spirit Steed's Stride by 550% of Zibai's DEF, provided its passive talent is unlocked.
Burst Forth With Vigor, But Enter in Silence is another useful stopping point: it grants 100 Phase Shift Radiance after the Elemental Skill, raises the maximum Spirit Steed's Stride uses per Lunar Phase Shift to five, and increases the first one's second-hit Lunar-Crystallize Reaction DMG by 220%.
The World, A Journey in Passing is an option if you want to go further. It increases Radiance gain and changes Spirit Steed's Stride to consume all Radiance, boosting that use and Zibai's Lunar-Crystallize Reaction DMG for the next 3s based on points spent above 70. You can skip C3 and C5 if you do not need the extra skill levels, and C4 if its Normal Attack sequence effect is not a priority.
Teams
Zibai contributes field damage and raises the party's Moonsign level. Her DEF also increases Lunar-Crystallize Base DMG through her passive, so the stat supports more than her own special skill.
Common mistakes
Do not leave Hydro out if your plan relies on converting Hydro Crystallize. Also check the party's Moonsign: the extra fourth Normal Attack hit needs Ascendant Gleam, and Night of the Sky's Unveiling gives different amounts of CRIT Rate at the two listed levels.
Do not ignore DEF while chasing CRIT stats. DEF improves the passive bonus to Spirit Steed's Stride and the Base DMG bonus for Lunar-Crystallize. Equally, do not assume the artifact set's CRIT Rate is always active: a nearby party member must trigger a Lunar Reaction while Zibai is on the field.
Use the Burst during Lunar Phase Shift if you want its 1.7s extension. Do not count on Moonlit Flower Forest for Energy in Domains, Trounce Domains or the Spiral Abyss: it only restores Energy at night outside combat and does not work in those activities.
