Slowbro-Mega @ Shed Shell  
Ability: Fur Coat  
EVs: 248 HP / 252 Def / 252 SpA / 252 SpD  
Bold Nature  
IVs: 0 Atk / 0 Spe  
- Will-O-Wisp  
- King's Shield  
- Slack Off  
- Volt Switch  

Sableye-Mega @ Sablenite  
Ability: Wonder Guard  
EVs: 248 HP / 252 Def / 252 SpA / 252 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 SpA / 0 Spe  
- King's Shield  
- Parting Shot  
- Defog  
- Recover  

Greninja-Ash @ Focus Sash  
Ability: Huge Power  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
IVs: 0 SpA  
- Dragon Ascent  
- Thousand Arrows  
- Knock Off  
- Photon Geyser  

Rayquaza-Mega @ Choice Scarf  
Ability: Shadow Tag  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
IVs: 0 SpA  
- Trick  
- Dragon Ascent  
- Encore  
- Spikes  

Chansey @ Eviolite  
Ability: Imposter  
EVs: 248 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Impish Nature  
- Fake Out  
- Wish  
- Whirlwind  
- Beak Blast  

Yveltal @ Safety Goggles  
Ability: Prankster  
EVs: 248 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Haze  
- Roost  
- Fiery Dance  
- Gastro Acid