Groudon-Primal @ Focus Sash  
Ability: Magic Guard  
Shiny: Yes  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Lonely Nature  
- Extreme Evoboost  
- Sunsteel Strike  
- Thousand Arrows  
- Mind Blown  

Yveltal @ Leppa Berry  
Ability: Magic Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Extreme Evoboost  
- Power Trip  
- Sunsteel Strike  
- Shore Up  

Gyarados-Mega @ Shed Shell  
Ability: Wonder Guard  
Shiny: Yes  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Whirlwind  
- Shore Up  
- Toxic Spikes  
- Parting Shot  

Deoxys-Attack @ Focus Sash  
Ability: Magic Guard  
Shiny: Yes  
EVs: 252 HP / 252 Atk / 252 Def / 248 SpA / 252 SpD / 252 Spe  
Hasty Nature  
- Photon Geyser  
- Light of Ruin  
- Knock Off  
- Light That Burns the Sky  

Slaking @ Leppa Berry  
Ability: Harvest  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Extreme Evoboost  
- Searing Sunraze Smash  
- Substitute  
- Strength Sap  

Guzzlord @ Leppa Berry  
Ability: Innards Out  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Extreme Evoboost  
- Power Trip  
- Sunsteel Strike  
- Searing Sunraze Smash