Furina's main abilities include "Soloist's Solicitation" for her Normal and Charged Attacks, "Salon Solitaire" as her Elemental Skill, and "Let the People Rejoice" as her ultimate. To use her effectively, you should take advantage of her Normal Attacks for consistent damage, switch Arkhe alignments strategically during combat, and utilise "Salon Solitaire" to summon powerful allies. Her ultimate, "Let the People Rejoice," not only deals significant Hydro damage but also provides valuable support to the entire party.