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Portrait of Sandrone

★★★★★CryoClaymore

Sandrone

Mirrored Analysis

The Seventh of the Fatui Harbingers, "Marionette." Interprets all phenomena through the prism of mathematics, and is an elegant lady who is never absent from a tea party.

Released
Version 6.7
GenGuru tier
SS DPS

Overview

  • On-field Cryo damage
  • Stellar-Conduct enabler

Sandrone is a Cryo damage dealer for Snezhnaya's Stellar Glimmer teams. While she is in the party, Superconduct becomes Stellar-Conduct and Cryo Swirl becomes Stellar Swirl. Her Charged Attack sends out Fagio, whose condensed beams build Decoding Power and, once she is in a Radiance state, deal Stellar Glimmer reaction damage. Her Elemental Skill then cashes that Decoding Power in for a much stronger Prism Shot and builds stacks that boost the ray from her Elemental Burst.

The Stellar-Conduct state needs her to stand inside a Polestar Field, which forms when the team triggers Stellar-Conduct, so pair her with off-field Electro. Build her for ATK first, since it also raises her Elemental Mastery and the reaction's base damage, then crits and enough Energy Recharge to burst every rotation.

Weapons

Best first. Every claymore on this list links to its page.

  1. A Teaspoon of Transcendence ★★★★★

    Her signature claymore. A big ATK bonus, CRIT DMG, and Charged Attack hits stack extra Stellar-Conduct and Stellar Swirl damage.

  2. A Thousand Blazing Suns ★★★★★

    A strong 5-star alternative. Using her skill or burst gives ATK and CRIT DMG, which suits a character who casts both every rotation.

  3. Wolf's Gravestone ★★★★★

    Plain ATK that feeds every part of her kit. A solid 5-star if you already own it.

  4. Forged by the Golden Melody ★★★★

    A 7.0 Battle Pass claymore built for Stellar Glimmer teams. It cycles through ATK, Elemental Mastery and Stellar Glimmer damage on its own.

  5. Tidal Shadow ★★★★

    A 4-star with a solid ATK bonus whenever she is healed. Good when the team has a healer.

  6. Mailed Flower ★★★★

    A free event claymore. ATK and Elemental Mastery after her skill hits or she triggers a reaction.

Artifact sets

  1. Disenchantment in Deep Shadow 4-piece

    The best set for her. It raises Stellar-Conduct damage and gives CRIT Rate against enemies hit by the reaction.

  2. Disenchantment in Deep Shadow + Gladiator's Finale 2-piece each

    A stopgap with ATK from both halves while you farm the full set.

Main stats and substats

Sands
ATK% or Energy Recharge
Goblet
ATK% or Cryo DMG Bonus
Circlet
CRIT DMG or CRIT Rate
Substats
CRIT DMG > CRIT Rate > ATK% > Energy Recharge

Talent priority

  1. Normal Attack Formule Phenomenale: Self-Evident Proposition
  2. Elemental Burst Formule Phenomenale: Q.E.D.
  3. Elemental Skill Formule Phenomenale: Differential Analysis

Teams

  • Stellar-Conduct with Odette

    Odette adds more Cryo and Stellar Glimmer damage, Yae Miko keeps Electro on enemies from off the field, and Alyosha adds more Electro while his wolf heals the active character.

  • Yae Miko and Zhongli

    Yae supplies Electro for Stellar-Conduct, Zhongli shields so Sandrone can keep firing, and Qiqi heals while adding a little extra Cryo.

  • Budget Stellar-Conduct

    Two 4-star Electro units keep the reaction going, and Diona shields and heals.

Tips

  • Let Fagio build Decoding Power with Charged Attacks, then use her skill while it is above half. That triggers the stronger Prism Shot and stacks up damage for her burst.
  • Do not let Decoding Power reach the maximum. Fagio then switches to Power Overdrive and fires much less often until the power drops.
  • Her Stellar Glimmer bonuses only apply in a Radiance state. Make sure the team has triggered Stellar-Conduct, or Stellar Swirl, before you start firing.
  • Her burst spends every Refined Tactics stack at once, so cast it after a skill, not before.

Other character guides recommend Sandrone as a teammate in these teams.

See every team comp, grouped by reaction.

Base stats at level 90

Base HP
13226
Base ATK
342
Base DEF
752
CRIT Rate
24.2%

Talents

Normal Attack Formule Phenomenale: Self-Evident Proposition
Normal Attack Generates threads that control her weapon using formulae, performing up to 3 consecutive strikes. Charged Attack Summons the Facilitatrice Automatisee Generaliste Interactive et Omnitache, or "Fagio," and switches it to **Decoding** mode: Unleashes a sweeping fire attack on enemies in front, as well as periodically fires condensed beams, dealing AoE Cryo DMG. **Radiance: Stellar Glimmer**: The condensed beams will instead deal AoE Cryo DMG that is considered the corresponding Stellar Glimmer reaction DMG. While in Decoding mode, Fagio's **Decoding Power** will continuously increase. Firing condensed beams will also further increase its Decoding Power. When Fagio's Decoding Power reaches the maximum of 100 points, it switches to Power Overdrive mode, in which it fires at opponents with longer intervals, dealing Cryo DMG. It will be unable to switch to Decoding mode at this time. When not in Decoding mode, Fagio's Decoding Power gradually decreases. When Sandrone is off-field, she will focus on maintaining Fagio, causing its Decoding Power to decrease at 300% the original rate. Fagio exits Power Overdrive mode when its Decoding Power has decreased to under 50. Plunging Attack Plunges from midair to strike the ground below, dealing DMG to opponents along their path and causing AoE DMG on landing.
Elemental Skill Formule Phenomenale: Differential Analysis
With her impeccable, ladylike poise, Sandrone boards the Tea Party Tactical Assault Hovermech and hovers forward for 6s. During this time, Sandrone can control the travel direction of the craft. Pressing Sprint consumes 10 Stamina and launches her into an elegant high-speed hover mode, in which she will move even faster at the cost of 15 Stamina per second. When Sandrone starts hovering, if there are opponents nearby, she will also summon a Prismatic Resonance Cannon and fire 2 Prism Shots at any opponents who have yet to cool down, dealing Cryo DMG. **Radiance: Stellar Glimmer**: The second Prism Shot will instead deal Cryo DMG that is considered the corresponding Stellar Glimmer reaction DMG. When on the Tea Party Tactical Assault Hovermech, Sandrone will also elegantly and quietly repair Fagio, causing **Decoding Power** to swiftly decrease.
Elemental Burst Formule Phenomenale: Q.E.D.
In line with established ladylike behavior, Sandrone summons a large number of Prismatic Resonance Cannons for a frontal bombardment before firing on her foes with a Convective Inhibition Ray, dealing AoE Cryo DMG. **Radiance: Stellar Glimmer**: The Convective Inhibition Ray instead deals AoE Cryo DMG that is considered the corresponding Stellar Glimmer reaction DMG.
Passive talent Eternal Speculation Engine
**Radiance: Stellar Glimmer**: When using the Elemental Skill **Formule Phenomenale: Differential Analysis**, if Fagio's **Decoding Power** is greater than 50, the second Prism Shot fired by Fagio at nearby opponents will deal 400% of its original DMG as Fagio's Decoding Power is decreased. Additionally, for every 10 points of Decoding Power Fagio loses, it gains 1 stack of Refined Tactics for 60s (max 10 stacks). When Sandrone uses the Elemental Burst **Formule Phenomenale: Q.E.D.** while in the Radiance: Stellar Glimmer state, all stacks of Refined Tactics are cleared, causing the Convective Inhibition Ray to deal 100% + (number of stacks cleared) × 10% of its original DMG.
Passive talent A Lady's Code of Conduct
Increases Sandrone's Elemental Mastery based on her ATK. Every 100 ATK will increase her Elemental Mastery by 8. The maximum increase she can gain this way is 160.
Passive talent Stellar Jubilee: Light of Rationalisme
Sandrone will enter the Radiance: Stellar-Conduct state when she is inside a **Polestar Field**, or the Radiance: Stellar Swirl state for 8s after a nearby party member triggers a Stellar Swirl reaction. When a party member triggers a Superconduct or Cryo Swirl reaction, it becomes a Stellar-Conduct or Stellar Swirl reaction instead, and the Base DMG of the aforementioned reaction is also increased by 0.7% for every 100 points of Sandrone's ATK. A maximum increase of 14% can be obtained in this way.
Passive talent A Caucus Prelude and a Long Tale
When Sandrone is in the party, you will gain additional snack rewards after turning in your Daily Commissions with Katheryne.

Constellations

C1 Morrow After the Golden Dusk
When in **Decoding** mode, Fagio's **Decoding Power** increases at a 50% lower rate, and all party members deal 30% increased Stellar Glimmer reaction DMG.
C2 An Heiress Gazed Into the Looking-Glass
Radiance: Stellar Glimmer: Increases CRIT DMG from Charged Attack condensed beams by 40%. Also, each time a beam is fired, CRIT DMG dealt by all condensed beams fired during this **Decoding** mode period will be further increased by 20%. Max 3 stacks.
C3 Refuse the Wake of Dusk, the Moonlit Yoke
Increases the Level of **Formule Phenomenale: Self-Evident Proposition** by 3. Maximum upgrade level is 15.
C4 In Knowledge Lies the World's True Ground
When Sandrone deals Stellar-Conduct or Stellar Swirl DMG to an opponent, she will also summon an extra Prismatic Resonance Cannon to fire off a coordinated attack which deals Cryo DMG at 125% or 187.5% of her ATK, respectively. This DMG is considered the corresponding Stellar Glimmer reaction DMG, and the effect can occur once every 4s.
C5 Of All Beside, She Takes No Part
Increases the Level of **Formule Phenomenale: Q.E.D.** by 3. Maximum upgrade level is 15.
C6 Narcissus Wakes, Her Eyes Upon the Dawn
When Fagio fires a condensed beam for the third time while in **Decoding** mode, the beam becomes a more powerful Condensed Cluster Beam that fires continuously. This beam will deal up to 4 additional instances of AoE Cryo DMG at 100% of Sandrone's ATK on top of any subsequent original beam fired. Radiance: Stellar Glimmer: The Condensed Cluster Beam attack deals 4 additional instances of AoE Cryo DMG. The DMG dealt with this attack, which is considered the corresponding Stellar Glimmer reaction DMG, is equal to: Radiance: Stellar-Conduct: 80% of Sandrone's ATK. Radiance: Stellar Swirl: 120% of Sandrone's ATK. Additionally, all Stellar Glimmer reaction DMG dealt by Sandrone is **elevated** by 20%.