Lugia probrably does shite for this team

Lugia @ Leftovers
Ability: Multiscale
EVs: 252 HP / 120 Def / 136 Spe
Bold Nature
IVs: 0 Atk
- Roost
- Whirlwind
- Toxic
- Ice Beam

Magearna @ Leftovers
Ability: Soul-Heart
EVs: 252 HP / 4 SpA / 252 SpD
Calm Nature
IVs: 0 Atk
- Fleur Cannon
- Flash Cannon
- Heart Swap
- Pain Split

Giratina-Origin @ Griseous Orb
Ability: Levitate
EVs: 252 Def / 244 SpA / 12 Spe
Modest Nature
IVs: 0 Atk
- Hex
- Draco Meteor
- Thunder Wave
- Defog

Groudon @ Red Orb
Ability: Drought
EVs: 248 HP / 8 Def / 252 SpD
Sassy Nature
- Stealth Rock
- Precipice Blades
- Rock Slide
- Thunder Wave

Ferrothorn @ Leftovers
Ability: Iron Barbs
EVs: 252 HP / 4 Def / 252 SpD
Sassy Nature
- Spikes
- Power Whip
- Leech Seed
- Protect

Arceus-Dark @ Dread Plate
Ability: Multitype
EVs: 252 HP / 80 Def / 176 Spe
Timid Nature
- Calm Mind
- Judgment
- Recover
- Refresh