Double dragon ?

Qsns (Kyurem-Black) @ Leftovers
Ability: Teravolt
Shiny: Yes
EVs: 164 HP / 252 SpA / 28 SpD / 64 Spe
Modest Nature
- Ice Beam
- Earth Power
- Substitute
- Protect

boTTT (Aegislash) @ Safety Goggles
Ability: Stance Change
EVs: 252 HP / 252 SpA / 4 SpD
Quiet Nature
- Wide Guard
- Shadow Ball
- Flash Cannon
- King's Shield

Shy-uh-n (Diancie) @ Diancite
Ability: Clear Body
EVs: 208 Atk / 48 SpA / 252 Spe
Hasty Nature
- Diamond Storm
- Moonblast
- Earth Power
- Protect

kamikaze (Hydreigon) @ Life Orb
Ability: Levitate
EVs: 4 HP / 252 SpA / 252 Spe
Modest Nature
- Draco Meteor
- Dark Pulse
- Fire Blast
- Protect

Rei (Rotom-Wash) @ Sitrus Berry
Ability: Levitate
EVs: 252 HP / 100 Def / 116 SpA / 40 SpD
Modest Nature
- Hydro Pump
- Thunderbolt
- Protect
- Thunder Wave

iliketrains11 (Talonflame) @ Life Orb
Ability: Gale Wings
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Will-O-Wisp
- Brave Bird
- Flare Blitz
- Protect