Darkness Energy - 142/147 Aquapolis - Rare Head you may return it to

you may return it to your hand

Argent Wing (60+) If your opponent's Active Pokémon has an Ability

he's far more comfortable with a flagon in his hand and a good companion at his side

Ability Hard Rock As long as Groudon ex has 1 Energy or less attached to it

Darkness Energy - 142/147 Aquapolis - Rare Head you may return it toCard TypeEnergy FormSpecial Evolves from null RuleIf the Pokmon Darkness Energy is attached to damages the Defending Pokmon (after applying Weakness and Resistance), the attack does 10 more damage to the Defending Pokmon. At the end of every turn, put 1 damage counter on the Pokmon Darkness Energy is attached to, unless it's Darkness or has Dark in its name. Darkness Energy provides Darkness Energy. (Doesn't count as a basic Energy card.)