Swalot

It gulps anything that fits in its mouth. Its special enzymes can dissolve anything.

Amnesia (30): Choose 1 of your opponent’s Active Pokémon’s attacks. That Pokémon can’t use that attack during your opponent’s next turn.

Swallow Up (40+): If, before doing damage, your opponent’s Active Pokémon has less remaining HP than this Pokémon, this attack does 80 more damage.