Your opponent may choose up to 3 Baby Pokémon, Basic Pokémon, and/or Evolution cards from his or her discard pile and shuffle them into his or her deck. Either way, you may do the same.
If there are more Energy cards attached to the Defending Pokémon than to Light Slowbro, this attack does 20 damage plus 20 more damage. If not, this attack does 20 damage.