Scizor @ Scizorite  
Ability: Light Metal  
EVs: 100 HP / 252 Atk / 84 Def / 72 Spe  
Naughty Nature  
- Bullet Punch  
- Hidden Power [Fire]  
- Aerial Ace  
- Swords Dance  

Volcarona @ Choice Scarf  
Ability: Flame Body  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Flamethrower  
- Overheat  
- Hurricane  
- Hidden Power [Rock]  

Armaldo @ Rockium Z  
Ability: Battle Armor  
EVs: 116 Atk / 140 SpD / 252 Spe  
Jolly Nature  
- Stone Edge  
- Aqua Jet  
- Swords Dance  
- Rock Blast

What they do:

Scizor-Mega is, as the name suggests, the main pokemon on this team, and is able to beat most of the meta by himself.
https://pokepast.es/05344cfd10be0cbe <- specific list and analysis.
Volcarona cleans up a lot of the things that Scizor-Mega loses to such as Vikavolt, Pheromosa, and Yanmega.
Armaldo beats Volcarona and Standard Golisopod 100%.
What 3-0s this team:
Golisopod 

Super Bulky Golisopod can potentially beat all of the mons