Black Sludge

“An item to be held by a Pokémon. If the holder is a Poison type, this sludge will gradually restore its HP. It damages any other type.”

“An item to be held by a Pokémon. It gradually restores HP to Poison-type Pokémon. It damages any other type.”

“A held item that gradually restores the HP of Poison-type Pokémon. It inflicts damage on all other types.”

“A hold item that gradually restores the HP of Poison-type Pokémon. It inflicts damage on all other types.”