Generation Iv
Skill Link
Increases the frequency of multi-strike moves.
Detailed Effect
This Pokémon always hits five times with two-to-five-hit moves, such as Icicle Spear. It also bypasses the accuracy checks on Triple Kick's second and third hits.
Pokémon With Skill Link
10 canonical Pokémon forms can have this Ability.

Shellder 
Cloyster
Pikipek
Trumbeak
Toucannon
Mega Heracross 
Aipom
Ambipom
Minccino
Cinccino