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If this card is attached to a Darkness Pokémon, each of the attacks of that Pokémon does 20 more damage to the Active Pokémon (before applying Weakness and Resistance).
Card rule
Attach a Pokémon Tool to 1 of your Pokémon that doesn't already have a Pokémon Tool attached to it.
Card rule
You may play as many Item cards as you like during your turn (before your attack).