The power of Luck

Halflings - Dungeons and Dragons

Halflings have the 'Lucky' species trait, being born with the supernatural gift of things just going their way. Mechanically, they can re-roll nat 1s whenever they make a check, making the chance of the worst outcome go from 1/20 to 1/400.

Domino - X-Men

Domino's mutant ability is to subconsciously cause random telekinetic effects that nudge things in her favor, effectively giving her constant good luck as things are moved into/out of place for her automatically.

Nagito Komaeda - Danganronpa

Many people in Danganronpa are born with an 'ultimate' talent, being the absolute best at what they do above all others. Nagito was born with 'ultimate luck', making things go his way, like winning a game of Russian roulette with 5 bullets in the cylinder rather than 1.

Shamrock - Marvel Comics

Shamrock mutated to become a vessel for the souls of people who had died as innocent victims of war. Whenever she's in trouble, those souls manifest as a burst of energy that makes things fall in her favor.