Corrosive Liquid - Discard all Pokémon Tools and Special Energy from all of your opponent's Pokémon. Pernicious Poison - Your opponent's Active Pokémon is now Poisoned. During Pokémon Checkup, place 16 damage counters on that Pokémon instead of 1. Mega Evolution ex Rule: When your Mega Evolution Pokémon ex is Knocked Out, your opponent takes 3 Prize cards.