Polar Star is a 5 star Bow obtained from the Weapon Event Wish in Genshin Impact.It mostly appears along with Tartaglia (Childe)’s banner.
Daylight’s Augury
Elemental Skill and Elemental Burst DMG increased by 12/15/18/21/24%. After a Normal Attack, Charged Attack, Elemental Skill or Elemental Burst hits an opponent, 1 stack of Ashen Nightstar will be gained for 12s. When 1/2/3/4 stacks of Ashen Nightstar are present, ATK is increased by 10/12.5/15/17.5/20% // 20/25/30/35% // 30/37.5/45/52.5/60% // 48/60/72/84/96%. The stack of Ashen Nightstar created by the Normal Attack, Charged Attack, Elemental Skill or Elemental Burst will be counted independently of the others.