Prospector’s Drill is a 4 star Polearm obtained from Weapon Event Wishes in Genshin Impac.

When the wielder is healed or heals others, they will gain a Unity’s Symbol that lasts 30s, up to a maximum of 3 Symbols. When using their Elemental Skill or Burst, all Symbols will be consumed and the Struggle effect will be granted for 10s.

For each Symbol consumed, gain 3%/4%/5%/6%/7% ATK and 7%8.5%/10%/11.5%/13% All Elemental DMG Bonus. The Struggle effect can be triggered once every 15s, and Symbols can be gained even when the character is not on the field.