Generation Iv
Tinted Lens
Powers up “not very effective” moves.
Detailed Effect
This Pokémon deals twice as much damage with moves that are not very effective against the target.
Pokémon With Tinted Lens
13 canonical Pokémon forms can have this Ability.

Venonat
Venomoth
Illumise
Yanmega
Butterfree
Hoothoot
Noctowl
Mothim
Sigilyph
Nymble
Lokix
Butterfree Gmax
Hisuian Braviary