Hoopa-U + Mega Diancie

Omega (Hoopa-Unbound) @ Assault Vest
Ability: Magician
EVs: 252 Atk / 4 SpA / 252 Spe
Hasty Nature
- Knock Off
- Drain Punch
- Gunk Shot
- Grass Knot

Diancie @ Diancite
Ability: Clear Body
EVs: 4 Atk / 252 SpA / 252 Spe
Hasty Nature
- Moonblast
- Earth Power
- Diamond Storm
- Protect

Garchomp @ Rocky Helmet
Ability: Rough Skin
EVs: 252 HP / 160 Def / 96 Spe
Impish Nature
- Earthquake
- Dragon Tail
- Stealth Rock
- Fire Blast

Blunder (Thundurus) @ Leftovers
Ability: Prankster
Shiny: Yes
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Thunderbolt
- Hidden Power [Ice]
- Thunder Wave
- Nasty Plot

Bleezus (Azumarill) @ Assault Vest
Ability: Huge Power
EVs: 240 HP / 252 Atk / 16 SpD
Adamant Nature
- Waterfall
- Play Rough
- Aqua Jet
- Knock Off

Germanwings (Talonflame) @ Sharp Beak
Ability: Flame Body
EVs: 88 HP / 252 Atk / 168 Spe
Jolly Nature
- Brave Bird
- Roost
- Flare Blitz
- Swords Dance