(OU) Scarf Drill + ZVolc

Diancie @ Diancite
Ability: Clear Body
EVs: 252 SpA / 4 SpD / 252 Spe
Hasty Nature
- Moonblast
- Diamond Storm
- Stealth Rock
- Protect

Tornadus-Therian @ Rocky Helmet
Ability: Regenerator
EVs: 88 HP / 164 Def / 32 SpA / 8 SpD / 216 Spe
Timid Nature
- Hurricane
- Knock Off
- U-turn
- Defog

Ferrothorn @ Leftovers
Ability: Iron Barbs
EVs: 252 HP / 24 Def / 232 SpD
Sassy Nature
IVs: 0 Spe
- Spikes
- Leech Seed
- Power Whip
- Gyro Ball

Tapu Fini @ Leftovers
Ability: Misty Surge
EVs: 248 HP / 20 Def / 136 SpD / 104 Spe
Timid Nature
IVs: 0 Atk
- Taunt
- Defog
- Scald
- Moonblast

Volcarona @ Buginium Z
Ability: Flame Body
EVs: 248 HP / 124 Def / 136 Spe
Timid Nature
- Quiver Dance
- Flamethrower
- Bug Buzz
- Roost

Excadrill @ Choice Scarf
Ability: Mold Breaker
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Earthquake
- Iron Head
- Rapid Spin
- Rock Slide