Rayquaza CレックウザC[チャンピオン]Unlimited Holofoil

You may discard up to 5 Energy cards from your hand. If you do, this attack does 10 damage plus 10 more damage for each Energy card you discarded.

Flip 2 coins. If both are tails, this attack does nothing. For each heads, discard an Energy attached to the Defending Pokémon.