Groudon-Primal @ Choice Scarf  
Ability: Shadow Tag  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Trick  
- Power Whip  
- V-create  
- Thousand Arrows  

Diancie-Mega @ Leftovers  
Ability: Pixilate  
EVs: 252 HP / 252 Atk / 4 Spe  
Lonely Nature  
- Fake Out  
- Extreme Speed  
- Boomburst  
- Spore  

Rayquaza-Mega @ Draco Plate  
Ability: Turboblaze  
EVs: 252 HP / 252 SpA / 4 SpD  
Modest Nature  
IVs: 0 Atk  
- Judgment  
- Shell Smash  
- Oblivion Wing  
- Dark Void  

Gengar-Mega @ Black Sludge  
Ability: Wonder Guard  
EVs: 8 HP / 248 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Substitute  
- Baton Pass  
- Shadow Ball  
- Toxic Spikes  

Giratina @ Safety Goggles  
Ability: Prankster  
EVs: 248 HP / 252 Def / 4 SpD / 4 Spe  
Bold Nature  
IVs: 0 Atk  
- Heal Order  
- Glare  
- Encore  
- Curse  

Audino-Mega @ Shed Shell  
Ability: Wonder Guard  
EVs: 248 HP / 252 Def / 8 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Defog  
- Recover  
- Parting Shot  
- Aromatherapy