might i suggest chople berry on the shell breaker set. the evs are good and hydro pump is the best choice. even at minus 1 if im not mistaken cloysters defense is pretty close to 300 (about 294 i think). with a chople berry cloyster can survive brelooms and roobushins mach punch with ease and kill back with hydro pump and icicle spear. vacuuum wave i imagine will still kill although its pretty rare to see anything with it these days. overall shell break cloyster is a huge threat in ou and if it remains uu will definitely be a top threat instead of just a mediocre supporter like before.
				
			






