Bethesda Softworks has released a new trailer for Fallout 4 that takes a look at what makes each Vault Dweller S.P.E.C.I.A.L. We were previously introduced to Strength, Perception, Endurance, Charisma, Intelligence, and Agility, and today, we take a look at the last stat, but often most important, Luck.

Luck is a mysterious stat most people don’t pay much attention to, but it’s probably the most important considering its benefits. Luck can help Vault Dwellers achieve more critical hits during combat or finding more valuable loot. Luck can also help you summon the Mysterious Stranger, who will make fast work of any and all threats during combat.

Fallout 4 is scheduled to be released on November 10 on PC, PlayStation 4, and Xbox One. If you want to learn more about Fallout 4's perks, check out our feature where we identify a large number of them. And be sure to watch all of the previously-released S.P.E.C.I.A.L. videos.