OU Hail Hazard Stack

Ninetales-Alola @ Choice Specs
Ability: Snow Warning
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Blizzard
- Freeze-Dry
- Moonblast
- Hidden Power [Ground]

Sandslash-Alola @ Life Orb
Ability: Slush Rush
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Swords Dance
- Icicle Crash
- Iron Head
- Earthquake

Toxapex @ Eject Button
Ability: Regenerator
EVs: 252 HP / 96 Def / 160 SpD
Bold Nature
IVs: 0 Atk
- Recover
- Scald
- Haze
- Toxic Spikes

Landorus-Therian @ Rockium Z
Ability: Intimidate
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Stealth Rock
- Earthquake
- Stone Edge
- U-turn

Greninja @ Expert Belt
Ability: Protean
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Spikes
- Hydro Pump
- Gunk Shot
- Hidden Power [Fire]

Celesteela @ Leftovers
Ability: Beast Boost
EVs: 4 Def / 252 SpA / 252 Spe
Modest Nature
IVs: 0 Atk
- Autotomize
- Air Slash
- Fire Blast
- Giga Drain