Blissey (F) @ Leftovers
Ability: Imposter
EVs: 252 HP / 252 Def / 4 SpA
Bold Nature
IVs: 0 Atk
- Ice Beam

Gengar-Mega @ Spooky Plate
Ability: Normalize
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Judgment
- Skill Swap
- Spacial Rend
- Secret Sword

Giratina @ Leftovers
Ability: Magic Bounce
EVs: 252 HP / 4 Atk / 252 SpD
Careful Nature
- Stealth Rock
- Whirlwind
- Rest
- Dragon Tail

Rayquaza-Mega @ Life Orb
Ability: Gale Wings
EVs: 252 Atk / 4 SpA / 252 Spe
Hasty Nature
- Brave Bird
- Sky Attack
- Dragon Ascent
- Draco Meteor

Slowbro-Mega @ Safety Goggles
Ability: Soundproof
EVs: 128 HP / 252 Def / 128 SpD
Bold Nature
IVs: 0 Atk
- Perish Song
- Calm Mind
- Scald
- Iron Defense

Registeel @ Leftovers
Ability: Unaware
EVs: 252 HP / 4 Atk / 252 SpD
Careful Nature
- Rest
- Brick Break
- Amnesia
- Iron Defense