Serene-Grace

Serene Grace is an ability in the Pokémon series that increases the likelihood of secondary effects accompanying a move to occur. Specifically, it doubles the chance of these secondary effects, which can include things like inflicting status conditions, lowering stats, or causing flinching.

Effects

Probability Increase: The primary effect of Serene Grace is to double the percentage chance of secondary effects happening. For example, if a move has a 10% chance to cause a status condition under normal circumstances, with Serene Grace, that chance increases to 20%.
Beneficial Interactions: Moves with normally high secondary effect chances, such as those with a 30% chance to cause flinching or status conditions, become even more potent.

Competitive Impact

Versatility in Movesets: Pokémon with Serene Grace often benefit greatly from moves that have any sort of secondary effect.
Strategic Advantage: In competitive battles, this can give

Effects

This Pokémon's moves have twice their usual effect chance. An effect chance is a move's chance to inflict a status ailment, cause a stat change, or make the target flinch in addition to the move's main effect. For example, flamethrower's chance of burning the target is doubled, but protect's chance of success and air cutter's increased critical hit rate are unaffected. secret power is unaffected.

Flavor Texts

ruby-sapphire: Promotes added effects.
emerald: Promotes added effects.
firered-leafgreen: Promotes added effects.
diamond-pearl: Boosts the likelihood of added effects appearing.
platinum: Boosts the likelihood of added effects appearing.
heartgold-soulsilver: Boosts the likelihood of added effects appearing.
black-white: Boosts the likelihood of added effects appearing.
black-2-white-2: Boosts the likelihood of added effects appearing.
x-y: Boosts the likelihood of additional effects occurring.
omega-ruby-alpha-sapphire: Boosts the likelihood of additional effects occurring.
sun-moon: Boosts the likelihood of additional effects occurring when attacking.
ultra-sun-ultra-moon: Boosts the likelihood of additional effects occurring when attacking.
lets-go-pikachu-lets-go-eevee: Boosts the likelihood of additional effects occurring when attacking.
sword-shield: Boosts the likelihood of additional effects occurring when attacking.
scarlet-violet: Raises the likelihood of additional effects occurring when the Pokémon uses its moves.