Minimize raises the user's Evasion stat by one stage and replaces the user's regular image with a tiny, generic image until the user faints or is switched out, or the battle ends.
Minimize will do nothing if the user's Evasion stat has reached a stage of +6.
Generation II
In addition to its previous effects, Pokémon that have used Minimize will receive double damage from Stomp.
Generation III and IV
Pokémon that have used Minimize no longer have their sprite replaced with a tiny generic image. All other effects are the same.
Generation V
Minimize raises the user's Evasion by two stages. In addition, Pokémon that have used Minimize will receive double damage from Steamroller.