Fake stall

Thought (Chansey) @ Choice Specs
Ability: Serene Grace
EVs: 252 HP / 252 Atk / 4 SpD
Modest Nature
IVs: 0 Atk
- Ice Beam
- Dazzling Gleam
- Fire Blast
- Thunderbolt

You (Sableye-Mega) @ Sablenite
Ability: Prankster
EVs: 248 HP / 252 Atk / 8 SpD
Adamant Nature
- Ice Punch
- Low Kick
- Knock Off
- Sucker Punch

This (Toxapex) @ Black Sludge
Ability: Merciless
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
IVs: 0 Atk
- Scald
- Blizzard
- Sludge Wave
- Baneful Bunker

Was (Skarmory) @ Choice Band
Ability: Weak Armor
EVs: 232 HP / 252 Atk / 24 Spe
Adamant Nature
- Brave Bird
- Iron Head
- Rock Slide
- Pursuit

Stall (Dugtrio) @ Life Orb
Ability: Arena Trap
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Memento
- Sucker Punch
- Earthquake
- Stone Edge

Huh (Clefable) @ Leftovers
Ability: Unaware
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
- Belly Drum
- Knock Off
- Ice Punch
- Meteor Mash