Kyogre ex (94/101) - [EX: Hidden Legends] Holofoil

Mark of Antiquity

Choose 1 of your opponent's Pokémon. This attack does 20 damage to that Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)

You may show your hand to your opponent. If you do, this attack does 50 damage plus 10 more damage for each Energy card in your hand. After doing damage, shuffle the Energy cards back into your deck.

When Pokémon-ex has been Knocked Out, your opponent takes 2 Prize cards.