Hey here's a common example of a Spikes Sharpedo
team. (Was searching for some on other threads, credits to
Panther-T)
The idea of these teams are pretty straightforward. You have a Spiker and a Stealth Rocker and then a bunch of sweepers. The spiker, which usually is a froslass (Klefki, Chesnaught, Roserade, and Cloyster are other options) as it's a good suicide lead. It's access to taunt prevents opposing pokemon from setting up early. It's speed is very high, only being outmatched by 8 pokemon in uu: Aerodactyl-mega, Crobat, Manectric-mega, Zeraora, Pidgeot-Mega, Azelf, Beedrill-Mega, and Starmie. Along with taunt is icy wind and destiny bond. Icy wind lowers your opponents speed, allowing you to destiny bond almost always before your opponent kills you, unless they're running some wack shit like scarf Starmie. It's important to predict certain hazard removing moves your opponent could use like Defog (which can be prevented by taunt) or Rapid Spin (Which could be prevented by switching in a ghost type pokemon)
One thing you shouldn't let happen when Froslass is on the field is let your opponent set up! Icy Wind is commonly the only attacking move used on froslass, and if your opponent leads with a pokemon like Swords Dance/Nasty Plot Scizor, Doublade, Infernape, Bisharp, Lucario, Feraligatr, or Mimikyu your team is looking for trouble as they all have priority and can be able to predict your Destiny Bonds. I would recommend immediately switching out if one of those are your opponent's leads.
Now for your Stealth Rocker, I would definitely recommend something bulky. Some examples include Aggron-Mega, Gligar, Hippowdon, Swampert, Cobalion, and Krookodile. These can switch into a lot of pokemon and be able to set up rocks before dying.
And then a bunch of sweepers, set up pokemon for you to go ham on your opponent. In this case, these pokemon are Bisharp, Gengar, Hydreigon, and Mega Sharpedo. These have an easier time sweeping with those Spikes and Rocks on your opponents side.
Here's another version of a Sharpedo Spike Stack
team. (Creds to
RandomKrud)
Pretty much a spiker (except a bulkier one in chesnaught), a rocker, and a bunch of sweepers. You get the gist.