Your Pokémon in play have no Weakness.During your opponent's next turn, the Defending Pokémon's attacks do 30 less damage (before applying Weakness and Resistance).
As long as this Pokémon is in the Active Spot, Basic Pokémon in play (both yours and your opponent's) have no Abilities, except for Mischievous Lock.Before doing damage, discard all Pokémon Tools from your opponent's Active Pokémon.