So I made a moveset and stuff for pokemon showdown for cloyster, its not like a kings rock set cuz im not that kid but here is the set
Cloyster @ Focus Sash
Ability: Skill Link
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Shell Smash
- Icicle Spear
- Liquidation
- Rock Blast
I recommend to run lele or something with psychic terrain to stop things like sucker, bullet punch or priority, this set is still too slow to outrun regieleki unless they have a nature that doesnt boost speed