1-you can choose breloom or starmie or ecxadrill
breloom nature:jolly item:focus sash max evs for attack and speed
moves:bullet seed,rock move that reduces speed (i forgot its name 😅),mach punch,spore ability :technician
2-starmie:timide life orb or leftovers max evs for sp attack and speed
moves:surf (STAB) psychic (STAB) rapid spin for hazards and ice beam for dragons because its fast pokemon
3-excadrill:jolly focus sash max evs for attack and speed ability mold breaker
stealth rock (mold breaker makes it pass magic bounce) rapid spin for hazards earthqauck (mold breaker makes it hit pokemons with levitate ability like wash rotom)
and rock slide for flinch chance and can hit dragonite without muiltiscale because of mold breaker too