Necrozma-Dusk-Mane @ Life Orb  
Ability: Magic Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Naughty Nature  
- Shell Smash  
- Sunsteel Strike  
- Precipice Blades  
- Ice Beam  

Groudon-Primal @ Leftovers  
Ability: Shadow Tag  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Serious Nature  
- V-create  
- Let's Snuggle Forever  
- Bonemerang  
- Ice Hammer  

Muk-Alola @ Shed Shell  
Ability: Wonder Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
- Recover  
- Baton Pass  
- Defog  
- Knock Off  

Steelix-Mega @ Safety Goggles  
Ability: Fur Coat  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
- Recover  
- U-turn  
- Will-O-Wisp  
- Thousand Waves  

Mewtwo-Mega-Y @ Leppa Berry  
Ability: Contrary  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- Photon Geyser  
- Thousand Arrows  
- Play Rough  
- Light That Burns the Sky  

Chansey (F) @ Eviolite  
Ability: Imposter  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
- Whirlwind  
- Perish Song  
- Recover  
- Spikes