Aqua Simulacra is a 5 star Bow obtained from the Wish in Genshin Impact.
The Cleansing Form
HP is increased by 16%/20%/24%/28%/32%. When there are opponents nearby, the DMG dealt by the wielder of this weapon is increased by 20%/25%/30%/35%/40%. This will take effect whether the character is on-field or not.