Malamar

When it comes to strong hypnosis, there's an endless number of people who utilize Malamar for their nefarious deeds.

Hypnotic Reign: Your opponent reveals their hand. You may discard a Pokémon you find there and use one of that Pokémon’s non-GX attacks as this attack.

Dark Pressure (80): Discard the top card of your opponent’s deck.