Sandrone
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.
Formule Phenomenale: Self-Evident Proposition
Normal AttackNormal 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-Conduct: The condensed beams will instead deal AoE Cryo DMG that is considered Stellar-Conduct 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.
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-Conduct: The condensed beams will instead deal AoE Cryo DMG that is considered Stellar-Conduct 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.
Formule Phenomenale: Differential Analysis
Elemental SkillWith 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-Conduct: The second Prism Shot will instead deal Cryo DMG that is considered Stellar-Conduct DMG.
When on the Tea Party Tactical Assault Hovermech, Sandrone will also elegantly and quietly repair Fagio, causing Decoding Power to swiftly decrease.
The turning of the gears in various machines, the precise point where the Primordial Sea freezes, the frequency at which the night songs gently drift in the air, the ancient laws of the tides' ebb and flow, and the rising and setting of the moon... All these can be brought under theorems reducible to clean, neat formulas.
"Then it does us no harm to admit, as indeed we must, that our gods, our hopes, and the things we love — they can all be defined by reason."
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-Conduct: The second Prism Shot will instead deal Cryo DMG that is considered Stellar-Conduct DMG.
When on the Tea Party Tactical Assault Hovermech, Sandrone will also elegantly and quietly repair Fagio, causing Decoding Power to swiftly decrease.
The turning of the gears in various machines, the precise point where the Primordial Sea freezes, the frequency at which the night songs gently drift in the air, the ancient laws of the tides' ebb and flow, and the rising and setting of the moon... All these can be brought under theorems reducible to clean, neat formulas.
"Then it does us no harm to admit, as indeed we must, that our gods, our hopes, and the things we love — they can all be defined by reason."
Formule Phenomenale: Q.E.D.
Elemental BurstIn 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-Conduct: The Convective Inhibition Ray instead deals AoE Cryo DMG that is considered Stellar-Conduct DMG.
"I can believe in something so long as solid evidence can be produced for it. If not, then I will have to first prove it."
"This is how a proper lady carries herself. She who submits to the unknown out of weakness of will cannot be called such."
Radiance: Stellar-Conduct: The Convective Inhibition Ray instead deals AoE Cryo DMG that is considered Stellar-Conduct DMG.
"I can believe in something so long as solid evidence can be produced for it. If not, then I will have to first prove it."
"This is how a proper lady carries herself. She who submits to the unknown out of weakness of will cannot be called such."
Passive Talents
Archaic Calculation Engine
Radiance: Stellar-Conduct: 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-Conduct 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.
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-Conduct 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.
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.
Light of Rationalisme
When your party members trigger Superconduct, it will be changed to Stellar-Conduct, and your party members' Base Stellar-Conduct DMG will be increased based on Sandrone's ATK: Every 100 ATK she has increases the Base Stellar-Conduct DMG by 0.7%. The maximum increase that can be gained this way is 14%.
Additionally, when Sandrone is within a Polestar Field, she will enter the Radiance: Stellar-Conduct state.
Additionally, when Sandrone is within a Polestar Field, she will enter the Radiance: Stellar-Conduct state.
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.
Constellation · Narcissorolegium
Constellation Lv.1 · 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-Conduct DMG.
Constellation Lv.2 · An Heiress Gazed Into the Looking-Glass
Radiance: Stellar-Conduct: 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.
Constellation Lv.3 · Refuse the Wake of Dusk, the Moonlit Yoke
Increases the Level of Formule Phenomenale: Self-Evident Proposition by 3.
Maximum upgrade level is 15.
Maximum upgrade level is 15.
Constellation Lv.4 · In Knowledge Lies the World's True Ground
When Sandrone deals Stellar-Conduct 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% of her ATK. This DMG is considered Stellar-Conduct DMG, and the effect can occur once every 4s.
Constellation Lv.5 · Of All Beside, She Takes No Part
Increases the Level of Formule Phenomenale: Q.E.D. by 3.
Maximum upgrade level is 15.
Maximum upgrade level is 15.
Constellation Lv.6 · 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-Conduct: The Condensed Cluster Beam will instead deal 4 additional instances of AoE Cryo DMG at 80% of Sandrone's ATK. This DMG is considered Stellar-Conduct DMG.
Additionally, all Stellar-Conduct DMG dealt by Sandrone is elevated by 20%.
Radiance: Stellar-Conduct: The Condensed Cluster Beam will instead deal 4 additional instances of AoE Cryo DMG at 80% of Sandrone's ATK. This DMG is considered Stellar-Conduct DMG.
Additionally, all Stellar-Conduct DMG dealt by Sandrone is elevated by 20%.
Stat Growth
Ascension Stat：CRIT Rate 19.2%
| Level | Base HP | Base ATK | Base DEF |
|---|---|---|---|
| 90 | 13,226 | 342 | 752 |
| 95 | 13,695 | 381 | 779 |
| 100 | 14,166 | 419 | 806 |
Lv.90 Leveling/Ascension Materials
Mora×2092400 
Wanderer's Advice×12 
Adventurer's Experience×11 
Hero's Wit×415 
Subdetection Unit×168 
Shivada Jade Sliver×1 
Shivada Jade Fragment×9 
Shivada Jade Chunk×9 
Shivada Jade Gemstone×6 
Broken Drive Shaft×18 
Reinforced Drive Shaft×30 
Precision Drive Shaft×36 
Plume of the Fallen Watcher×46