Rayquaza-Mega @ Choice Band  
Ability: Teravolt  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Ascent  
- Outrage  
- Extreme Speed  
- Thousand Arrows  

Groudon-Primal @ Safety Goggles  
Ability: Mold Breaker  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Thousand Arrows  
- Attack Order  
- Sacred Fire  
- Bullet Seed  

Gengar-Mega @ Spooky Plate  
Ability: Mold Breaker  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Judgment  
- Dark Void  
- Sludge Wave  
- Focus Blast  

Mewtwo-Mega-X @ Life Orb  
Ability: Turboblaze  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Bullet Punch  
- Close Combat  
- Psycho Cut  
- Play Rough  

Giratina @ Safety Goggles  
Ability: Prankster  
EVs: 248 HP / 8 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Spore  
- Encore  
- Curse  
- Roost  

Rayquaza-Mega @ White Herb  
Ability: Teravolt  
EVs: 4 Atk / 252 SpA / 252 Spe  
Mild Nature  
- Shell Smash  
- Extreme Speed  
- Chatter  
- Freeze-Dry