Luck
Fallout 4 S.P.E.C.I.A.L.
Luck is one of the seven S.P.E.C.I.A.L. attributes in Fallout 4, rated 1 to 10 at character creation. Luck is a measure of your general good fortune, and affects the recharge rate of Critical Hits as well as the condition and durability of items that you loot. Its column of the perk chart holds 10 perks, from Fortune Finder at Luck 1 to Ricochet at Luck 10.
It can be raised permanently by the Luck bobblehead and You're S.P.E.C.I.A.L. book, and 37 pieces of apparel shift it while in effect.
Luck Builds
Luck Perks
You've learned to discover the Wasteland's hidden wealth, and find more bottle caps in containers.
You know just how to scavenge to keep the fight going, and find more ammunition in containers.
+5% bonus damage means enemies will sometimes explode into a gory red paste. Watch out for flying eyeballs!
Who is he? Why does he help? Who cares! The Mysterious Stranger will appear occasionally in V.A.T.S. to lend a hand, with deadly efficiency...
You're not stupid! Just... different. Randomly receive 3x XP from any action, and the lower your Intelligence, the greater the chance.
Advanced training for enhanced combat effectiveness! Criticals do 50% more extra damage.
You're a patient battlefield tactician, and can save a Critical Hit, to be used in V.A.T.S. when you need it the most.
Death becomes you! Any kill in V.A.T.S. has a 15% chance to restore all Action Points.
Feeling lucky? You should! Each hit in V.A.T.S. has a chance of filling your Critical meter.
What goes around comes around! An enemy's ranged attack will sometimes ricochet back and instantly kill them. The closer you are to death, the higher the chance.