Does 30 damage plus 10 more damage for each Energy attached to Poliwrath but not used to pay for this attack's Energy cost. Extra Energy after the 2nd doesn't count.
Whirlpool うずしお
40
If the Defending Pokémon has any Energy cards attached to it, choose 1 of them and discard it.
Base Set 2 print
Water Gun みずでっぽう
30+
Does 30 damage plus 10 more damage for each Energy attached to Poliwrath but not used to pay for this attack's Energy cost. You can't add more than 20 damage in this way.
Whirlpool うずしお
40
If the Defending Pokémon has any Energy cards attached to it, choose 1 of them and discard it.