Mewtwo-Mega-Y @ Mewtwonite Y  
Ability: Insomnia  
EVs: 252 SpA / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Recover  
- Psych Up  
- Stored Power  
- Skill Swap  

Speed / Transfer (Magearna)  
Ability: Soul-Heart  
EVs: 92 HP  
IVs: 0 Atk  
- Heart Swap  
- Agility  

Set up (Clefable) @ Red Card  
Ability: Cute Charm  
EVs: 252 HP / 4 SpA / 252 Spe  
IVs: 0 Atk  
- Cosmic Power  
- Work Up  
- Soft-Boiled  
- Recycle  

Convenience (Oranguru)  
Ability: Inner Focus  
EVs: 92 HP  
- Payback  
- Instruct  

Skill & Acc (Spinda)  
Ability: Contrary  
EVs: 116 HP  
IVs: 0 Atk  
- Skill Swap  
- Mud-Slap  

Defog and Supress (Mew)  
Ability: Synchronize  
EVs: 64 HP  
IVs: 0 Atk  
- Gastro Acid  
- Volt Switch  
- Defog  
- Worry Seed