Scolipede

It clasps its prey with the claws on its neck until it stops moving. Then it finishes it off with deadly poison.

Ability — Poison Point: If this Pokémon is your Active Pokémon and is damaged by an opponent’s attack (even if this Pokémon is Knocked Out), the Attacking Pokémon is now Poisoned.

Venoshock (80): If the Defending Pokémon is Poisoned, this attack does 40 more damage.