This my first playing pvp in any pokemon. I don't really know which pokemon I could replace on my team. I'm thinking of replacing cloyster for either a special def tank or a bulky pokemon that can set stealth rocks. I should probably replace volcarona seems it's too frail. Thanks for your help.
Cloyster skill link, focus sash
Rock blast
Icicle spear
Pin Missile
Shell Smash
Volcarona flame body, life orb
Quiver dance
Bug buzz
Fiery dance
Giga drain
Conkeldurr guts, flame orb
Stone edge
Bulk up
Mach punch
Drain punch
Darmanitan, sheer force, choice scarf
U turn
Flare Blitz
Superpower
Stone edge
Roton wash, levitate, leftovers
Hydro pump
Volt switch
Pain split
Will-o- wisp
Magnezone, magnet pull, choice scarf
Hidden power fire
Volt switch
Thunderbolt
flash cannon