Beedrill-Mega @ Black Sludge  
Ability: Wonder Guard  
EVs: 252 HP / 4 SpD / 252 Spe  
Jolly Nature  
- Trick  
- Taunt  
- Spikes  
- U-turn  

Groudon-Primal @ Choice Scarf  
Ability: Shadow Tag  
EVs: 40 HP / 252 Atk / 216 Spe  
Jolly Nature  
- Thousand Arrows  
- V-create  
- Trick  
- Icicle Crash  

Rayquaza-Mega @ Shed Shell  
Ability: Mold Breaker  
EVs: 184 HP / 4 Def / 252 SpA / 68 Spe  
Rash Nature  
- Shell Smash  
- Oblivion Wing  
- Dark Void  
- Earthquake  

Kyogre-Primal @ Safety Goggles  
Ability: Wonder Guard  
EVs: 248 HP / 252 Def / 8 Spe  
Bold Nature  
IVs: 0 Atk  
- Roost  
- Parting Shot  
- Scald  
- Defog  

Diancie-Mega @ Lum Berry  
Ability: Pixilate  
EVs: 248 HP / 252 Atk / 8 SpA  
Brave Nature  
- Pain Split  
- Extreme Speed  
- Boomburst  
- Toxic Spikes  

Giratina @ Safety Goggles  
Ability: Prankster  
EVs: 248 HP / 252 Def / 8 Spe  
Impish Nature  
IVs: 0 Atk  
- Spore  
- Curse  
- Recover  
- Encore