Generation Vii
Corrosion
The Pokémon can poison the target even if it’s a Steel or Poison type.
Detailed Effect
This Pokémon's moves and item ignore the usual immunity of Poison and Steel Pokémon when attempting to inflict poison.
Pokémon With Corrosion
5 canonical Pokémon forms can have this Ability.

Salandit
Salazzle
Salazzle Totem
Glimmet
Glimmora