Mega Greninja ex

Once during your turn, if this Pokémon is in the Active Spot, you may discard a Basic Water Energy card from your hand in order to use this Ability. Place 6 damage counters on 1 of your opponent's Pokémon.

You may put a Water Energy attached to this Pokémon into your hand and have this attack do 80 more damage.

Mega Evolution ex Rule: When your Mega Evolution Pokémon ex is Knocked Out, your opponent takes 3 Prize cards.