The best weapon for Fischl in Genshin Impact highly depends on which role she’s taking in the team. Obviously, for the main DPS build, Fischl's weapon relies on damage buffs of her Normal Attack. Meanwhile, for Sub-DPS/Support build, it’s Oz’s damage that’s the main focus. The Raven provides many damage bonuses and easy access to Electro Elemental Reactions, making it crucial in specific team compositions.