You may return any number of basic Water Energy cards attached to all of your Pokémon to your hand. If you do, this attack does 50 damage plus 10 more damage for each Energy you returned.
Power Blow
10+ Damage
Does 10 damage plus 10 more damage for each Energy attached to Team Aqua's Walrein.
Disclaimer: The following data is based on sale history from a third party source. Data is updated about every 5 days. This data does not serve as a value guarantee.