Pure Power (Japanese: ヨガパワー Yoga Power) is an Ability introduced in Generation III. It is the signature Ability of Meditite and Medicham.
Pure Power doubles the Attack stat of the Pokémon with this Ability.
Pure Power has no effect outside of battle.
Pure Power has a one-in-three chance of boosting a physical move (including regular attacks and items like Iron Thorn) by 50% when such an attack is used. The chance of activating appears to be lower in Pokémon Super Mystery Dungeon.