Camerupt-Mega @ Cameruptite  
Ability: Solid Rock  
EVs: 248 HP / 8 Def / 252 SpA  
Quiet Nature  
IVs: 0 Atk / 0 Spe  
- Heat Wave  
- Earth Power  
- Nature Power  
- Protect  

Porygon2 @ Eviolite  
Ability: Download  
EVs: 252 HP / 148 Def / 16 SpA / 92 SpD  
Quiet Nature  
IVs: 0 Atk / 0 Spe  
- Ice Beam  
- Trick Room  
- Gravity  
- Recover  

Scrafty @ Assault Vest  
Ability: Intimidate  
EVs: 252 HP / 188 Atk / 20 Def / 48 SpD  
Brave Nature  
IVs: 3 Spe  
- Fake Out  
- Knock Off  
- Drain Punch  
- Super Fang  

Tapu Bulu @ Figy Berry  
Ability: Grassy Surge  
EVs: 252 HP / 180 Atk / 76 SpD  
Brave Nature  
IVs: 18 Spe  
- Wood Hammer  
- Superpower  
- Swords Dance  
- Protect  

Mimikyu @ Mental Herb  
Ability: Disguise  
EVs: 216 HP / 40 Atk / 252 Spe  
Jolly Nature  
- Play Rough  
- Will-O-Wisp  
- After You  
- Trick Room  

Stakataka @ Rockium Z  
Ability: Beast Boost  
EVs: 252 HP / 252 Atk / 4 SpD  
Lonely Nature  
IVs: 15 Def / 0 Spe  
- Gyro Ball  
- Stone Edge  
- Trick Room  
- Ally Switch  

Spread notes:
Scrafty takes most Fini Moonblast and most -1 Mega Salamence Double-Edge
Tapu Bulu OHKOes Stakataka with Superpower
Mimikyu has max Speed to outrun Kyurem-B and get off the fast After You, with 40 Atk to 2HKO 0/0- Mega Salamence with Play Rough