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The Regirock, Regice, Registeel, or Regigigas this card is attached to takes 30 less damage from your opponent's attacks (after 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).
