Crobat

When you play this Pokémon from your hand to evolve 1 of your Pokémon during your turn, you may prevent all effects of your opponent's attacks, including damage, done to this Pokémon until the end of your opponent's next turn.

Severe Poison

60

Your opponent's Active Pokémon is now Poisoned. Put 4 damage counters instead of 1 on that Pokémon between turns.