Deoxys-Attack Offense

Deoxys-Attack @ Life Orb
Ability: Pressure
EVs: 4 Atk / 252 SpA / 252 Spe
Rash Nature
- Psycho Boost
- Ice Beam
- Superpower
- Extreme Speed

Groudon @ Red Orb
Ability: Drought
EVs: 248 HP / 8 Def / 252 SpD
Careful Nature
- Stealth Rock
- Precipice Blades
- Roar
- Lava Plume

Xerneas @ Power Herb
Ability: Fairy Aura
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Geomancy
- Moonblast
- Thunder
- Focus Blast

Gengar-Mega @ Gengarite
Ability: Shadow Tag
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Shadow Ball
- Sludge Bomb
- Thunderbolt
- Focus Blast

Yveltal @ Life Orb
Ability: Dark Aura
EVs: 4 Atk / 252 SpA / 252 Spe
Rash Nature
- Dark Pulse
- Oblivion Wing
- Sucker Punch
- Heat Wave

Arceus-Water @ Splash Plate
Ability: Multitype
EVs: 252 HP / 132 Def / 124 Spe
Bold Nature
IVs: 0 Atk
- Defog
- Ice Beam
- Toxic
- Recover