I dont know why

Kyurem-Black @ Choice Band
Ability: Teravolt
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Outrage
- Fusion Bolt
- Dragon Claw
- Iron Head

Nihilego @ Choice Scarf
Ability: Beast Boost
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Power Gem
- Sludge Wave
- Thunderbolt
- Hidden Power [Ice]

Hula Hula (Hoopa-Unbound) @ Choice Specs
Ability: Magician
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Dark Pulse
- Psyshock
- Focus Blast
- Thunderbolt

Landorus-Therian @ Rocky Helmet
Ability: Intimidate
EVs: 248 HP / 216 Def / 28 SpD / 16 Spe
Impish Nature
- Earthquake
- U-turn
- Stealth Rock
- Hidden Power [Ice]

THUNDERSTRUCK! (Tapu Koko) @ Magnet
Ability: Electric Surge
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Thunderbolt
- Volt Switch
- Dazzling Gleam
- Hidden Power [Ice]

Give Her the CLAMPS! (Scizor) @ Scizorite
Ability: Technician
EVs: 248 HP / 96 Def / 164 SpD
Impish Nature
- Swords Dance
- Roost
- Bullet Punch
- U-turn