Ajajaafro fixed team.

Xerneas @ Power Herb
Trait: Fairy Aura
EVs: 184 HP / 28 Def / 252 SAtk / 44 Spd
Modest Nature
- Geomancy
- Moonblast
- Grass Knot
- Hidden Power [Fire]

Ho-Oh @ Choice Band
Trait: Regenerator
EVs: 248 HP / 208 Atk / 52 SDef
Adamant Nature
- Brave Bird
- Sacred Fire
- Earthquake
- Sleep Talk

Salamence (M) @ Salamencite
Trait: Intimidate
EVs: 248 HP / 136 Def / 124 Spd
Impish Nature
- Dragon Dance
- Roost
- Refresh
- Return

Yveltal @ Rocky Helmet
Ability: Dark Aura
EVs: 240 HP / 252 Def / 16 Spe
Impish Nature
- Foul Play
- Sucker Punch
- Taunt
- Roost

Arceus-Water @ Splash Plate
Trait: Multitype
EVs: 248 HP / 244 Def / 16 Spd
IVs: 0 Atk
Bold Nature (+Def, -Atk)
- Judgment
- Defog
- Toxic
- Recover

Groudon @ Red Orb
Ability: Drought
EVs: 240 HP / 32 Atk / 148 SpD / 88 Spe
Adamant Nature
- Stealth Rock
- Thunder Wave
- Stone Edge
- Precipice Blades