Furina buffs team members with her Burst, and deals off-field damage with her Skill.
Because of her HP drain and Burst mechanics, Furina encourages the use of teamwide healers.
Regarding Weapon Choices:
The Non-Energy Recharge Weapons see better performances when Furina is used in teams with lower Energy Recharge Requirements.
Key of Khaj-Nisut: Three stacks of this weapon is extremely reliable as long as Furina's Skill hits opponents. It can help elevate the team's damage with its teamwide Elemental Mastery buff which can lead to it performing better than weapons listed above.
Uraku Misugiri: This ranking assumes Furina is not paired with a Geo unit. If Furina is paired with a Geo unit, this weapon is better than .
Favonius Sword: The value of this weapon can fluctuate based on Furina's Energy Recharge requirements and the team's Energy Recharge Requirements.
Regarding Artifact Choices:
Main Stats
Hydro DMG: HP% is recommended with (4) as an artifact set, elsewise, Hydro DMG is recommended. At [C2] the two become roughly similar, assuming (4).
Substats
Energy Recharge: Prioritize until requirements are met.