How to get Skill Link Cloyster Moveset

Competitive Information for Cloyster [Sun / Moon]

Cloyster is an outstanding physical sweeper. It's goal is to take down the opponent's team with brute physical power. White Herb will reset Cloyster's negative stat changes once (specifically for when it uses Shell Smash). With Skill Link, Cloyster's multi-hit attacks always hit the maximum number of times. Cloyster's main set is one that can sweep most teams with ease; in fact, it's a liability to have a bulky ground-type when your opponent has a cloyster. This set is best used on an offensive team, where other sweepers can open up holes in defensive cores for Cloyster to take advantage of. Shell Smash is the crux of this set, doubling Cloyster's Attack, Special Attack, and Speed ​​to threatening levels. Icicle Spear is the perfect move for Cloyster; because of skill link, it will always hit five times, effectively making it a 125 Base Power STAB move. Rock Blast offers great coverage with Icicle Spear, hitting Fire-, Water-, and Ice-types for at least neutral damage. In the last slot, either Hydro Pump or Razor Shell is acceptable. Hydro Pump is the preferred option for getting past Skarmory, Scizor, Forretress, and Metagross, since it hits their weaker Special Defense; However, Razor Shell will destroy Tyranitar and Heatran without fail, as they both commonly run specially defensive sets.

Razor Shell is a physical STAB-boosted 75-base power Water-type move (50% chance to lower the target's defense by 1 stage).
Hydro Pump is a special STAB-boosted 110-base power Water-type move that deals a gigantic amount of damage.
Shell smash is a status move (lowers def, spd by 1 stage; raises atk, spa, spe by 2 stages).
Rock blast is a physical 25-base power Rock-type move (hits 2-5 times in one turn).
Icicle Spear is a physical STAB-boosted 25-base power Ice-type move (hits 2-5 times in one turn).
No additional EV spread were found for this set at this time.