Protosynthesis

Sunlight or Booster Energy boosts the highest stat by 1.3, or Speed by 1.5.

In harsh sunlight or after consuming a held Booster Energy, multiplies this Pokémon's highest stat by 1.3, or Speed by 1.5 if it is highest. Stat stages are considered when the effect activates; ties prioritize Attack, Defense, Special Attack, Special Defense, then Speed. A sunlight activation prevents Booster Energy from activating and ends with the sunlight. A Booster Energy activation ends when the Pokémon leaves the field.

10 Pokémon have this ability

#984

Great Tusk

GroundFightingPaldea

#985

Scream Tail

FairyPsychicPaldea

#986

Brute Bonnet

GrassDarkPaldea

#987

Flutter Mane

GhostFairyPaldea

#988

Slither Wing

BugFightingPaldea

#989

Sandy Shocks

ElectricGroundPaldea

#1005

Roaring Moon

DragonDarkPaldea

#1009

Walking Wake

WaterDragonPaldea

#1020

Gouging Fire

FireDragonPaldea

#1021

Raging Bolt

ElectricDragonPaldea