Genshin Impact Furina Build

When using Let the People Rejoice, Furina will gain 150 Fanfare.
Additionally, Furina's Fanfare limit is increased by 100.

While Let the People Rejoice lasts, Furina's Fanfare gain from increases or decreases in nearby characters' HP is increased by 250%. Each point of Fanfare above the limit will increase Furina's Max HP by 0.35%. Her maximum Max HP increase is 140%.

Increases the Level of Let the People Rejoice by 3.
Maximum upgrade level is 15.

When the Salon Members from Salon Solitaire hit an opponent, or the Singer of Many Waters restores HP to nearby active characters, Furina will restore 4 Energy. This effect can be triggered once every 5s.

Increases the Level of Salon Solitaire by 3.
Maximum upgrade level is 15.

When using Salon Solitaire, Furina gains "Center of Attention" for 10s.
Throughout the duration, Furina's Normal Attacks, Charged Attacks, and Plunging Attacks are converted into Hydro DMG which cannot be overridden by any other elemental infusion. DMG is also increased by an amount equivalent to 18% of Furina's max HP.
Throughout the duration, Furina's Normal Attacks (not including Arkhe: Seats Sacred and Secular Attacks), Charged Attacks, and the impact of Plunging Attacks will cause different effects up to every 0.1s after hitting opponents depending on her current Arkhe alignment:

Arkhe: Ousia
Every 1s, all nearby characters in the party will be healed by 4% of Furina's max HP, for a duration of 2.9s. Triggering this effect again will extend its duration.
Arkhe: Pneuma
This Normal Attack (not including Arkhe: Seats Sacred and Secular Attacks), Charged Attack, or Plunging Attack ground impact DMG will be further increased by an amount equivalent to 25% of Furina's max HP. When any of the attacks mentioned previously hit an opponent, all nearby characters in the party will consume 1% of their current HP.

During the duration of each instance of "Center of Attention," the above effects can be triggered up to 6 times. "Center of Attention" will end when its effects have triggered 6 times or when the duration expires.