Ultra No Holds Barred

Tapu Koko @ Choice Specs
Ability: Electric Surge
Shiny: Yes
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk / 30 Def
- Thunderbolt
- Dazzling Gleam
- Hidden Power [Ice]
- Volt Switch

Keldeo-Resolute @ Choice Scarf
Ability: Justified
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Scald
- Secret Sword
- Surf
- Icy Wind

Necrozma-Dusk-Mane @ Ultranecrozium Z
Ability: Prism Armor
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Swords Dance
- Sunsteel Strike
- Photon Geyser
- Earthquake

Naganadel @ Dragonium Z
Ability: Beast Boost
Shiny: Yes
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Nasty Plot
- Flamethrower
- Sludge Wave
- Draco Meteor

Yveltal @ Choice Scarf
Ability: Dark Aura
EVs: 4 Atk / 252 SpA / 252 Spe
Modest Nature
- Dark Pulse
- Foul Play
- Oblivion Wing
- U-turn

Metagross @ Metagrossite
Ability: Clear Body
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Zen Headbutt
- Bullet Punch
- Meteor Mash
- Ice Punch