Greninja @ Expert Belt  
Ability: Protean  
EVs: 80 HP / 16 Atk / 252 Def / 160 Spe  
Naive Nature  
- Rock Tomb  
- Dig  
- Hidden Power [Fire]  
- Gunk Shot  

Slowbro-Mega (M) @ Slowbronite  
Ability: Oblivious  
EVs: 248 HP / 12 Def / 248 SpD  
Calm Nature  
IVs: 0 Atk  
- Iron Defense  
- Amnesia  
- Scald  
- Rest  

Magearna @ Fairium Z  
Ability: Soul-Heart  
EVs: 248 HP / 92 Def / 120 SpA / 48 SpD  
Modest Nature  
IVs: 0 Atk  
- Trick Room  
- Substitute  
- Heart Swap  
- Fleur Cannon