Team, all at level 60:

Cloyster: Toxic Spikes, Iron Defense, Hail, Aqua Ring (holding eject pack)

Avalugg: Curse, Ice Ball, Earthquake, Recover (holding chople berry)

Weavile: Psycho Cut, Dig, Icicle Crash, Poison Jab (holding assault vest)

Mamoswine: Curse, Earthquake, Icicle Crash, Sheer Cold (holding Passho berry)

Rotom Freeze: Double Team, Volt Switch, Blizzard, Thunder Wave (holding Apicot berry)

Mega Abomasnow: Giga Drain, Earthquake, Ice Punch, Curse (holding Abomite)