Deoxys-Speed @ Terrain Extender  
Ability: Psychic Surge  
EVs: 248 HP / 252 Def / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Entrainment  
- Spikes  
- Parting Shot  
- Lunar Dance  

Mewtwo-Mega-X @ Choice Band  
Ability: Huge Power  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Jolly Nature  
- Photon Geyser  
- Play Rough  
- Sunsteel Strike  
- Fire Lash  

Chansey @ Figy Berry  
Ability: Innards Out  
EVs: 248 HP / 100 SpD / 252 Spe  
Mild Nature  
IVs: 0 Def  
- Wish  
- Beak Blast  
- Baneful Bunker  
- Whirlwind  

Deoxys-Attack @ Leppa Berry  
Ability: Harvest  
EVs: 248 HP / 248 Atk / 252 SpA / 252 Spe  
Naive Nature  
IVs: 0 Def / 0 SpD  
- Light That Burns the Sky  
- Searing Sunraze Smash  
- Menacing Moonraze Maelstrom  
- Shell Smash  

Gyarados-Mega @ Shed Shell  
Ability: Wonder Guard  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Shore Up  
- Pursuit  
- Gastro Acid  
- Magic Coat  

Kartana @ Choice Scarf  
Ability: Huge Power  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Sunsteel Strike  
- Leaf Blade  
- Fire Lash  
- Switcheroo