Four Leaf Clover (Fallout 76)

Four Leaf Clover is a Luck-based perk

Effects
The first rank grants a 7.5% chance, the second rank a 10.5%, and the third rank a 13.5% chance to fill the critical meter with each hit on an opponent in V.A.T.S.

Behind the scenes
Vault Boy's outfit and fighting stance are a reference to the leprechaun mascot of the University of Notre Dame.