Kingdra ex

Use any attack from Kingdra ex’s Basic Pokémon card or Stage 1 Evolution card. (Kingdra ex doesn’t have to pay for that attack’s Energy cost.)

Does 50 damage plus 20 more damage for each {W} Energy attached to Kingdra ex but not used to pay for this attack’s Energy cost. You can’t add more than 40 damage in this way.