Metagross-Mega @ Metagrossite
Ability: Clear Body
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Iron Head
- Stomping Tantrum
- Ice Punch
- Protect
Incineroar (M) @ Assault Vest
Ability: Intimidate
EVs: 252 HP / 68 Atk / 140 Def / 32 SpD / 16 Spe
Adamant Nature
- Fake Out
- U-turn
- Knock Off
- Flare Blitz
Tapu Koko @ Light Clay
Ability: Electric Surge
EVs: 248 HP / 8 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Reflect
- Light Screen
- Taunt
- Volt Switch
Zygarde @ Choice Band
Ability: Aura Break
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Thousand Arrows
- Thousand Waves
- Extreme Speed
- Superpower
Cresselia @ Electric Seed
Ability: Levitate
EVs: 248 HP / 12 Def / 56 SpA / 192 SpD
Bold Nature
IVs: 0 Atk
- Ally Switch
- Moonlight
- Helping Hand
- Psychic
Kyurem-Black @ Icium Z
Ability: Teravolt
EVs: 204 Atk / 52 SpA / 252 Spe
Hasty Nature
- Freeze Shock
- Ice Beam
- Fusion Bolt
- Protect
Ability: Clear Body
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Iron Head
- Stomping Tantrum
- Ice Punch
- Protect
Incineroar (M) @ Assault Vest
Ability: Intimidate
EVs: 252 HP / 68 Atk / 140 Def / 32 SpD / 16 Spe
Adamant Nature
- Fake Out
- U-turn
- Knock Off
- Flare Blitz
Tapu Koko @ Light Clay
Ability: Electric Surge
EVs: 248 HP / 8 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Reflect
- Light Screen
- Taunt
- Volt Switch
Zygarde @ Choice Band
Ability: Aura Break
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Thousand Arrows
- Thousand Waves
- Extreme Speed
- Superpower
Cresselia @ Electric Seed
Ability: Levitate
EVs: 248 HP / 12 Def / 56 SpA / 192 SpD
Bold Nature
IVs: 0 Atk
- Ally Switch
- Moonlight
- Helping Hand
- Psychic
Kyurem-Black @ Icium Z
Ability: Teravolt
EVs: 204 Atk / 52 SpA / 252 Spe
Hasty Nature
- Freeze Shock
- Ice Beam
- Fusion Bolt
- Protect
I started off with my favorite Mega Metagross/Kyub/Koko core. Metagross goes well with Kyub, is also probably the best mega in the meta right now, and instead of using offensive Koko this time I run dual screens + Volt Switch for momentum, Taunt is basically to keep TR out so I don't have to lose half of my squad against it. Next, I want an Intimidate user and I went with Incineroar, this thing has Fake Out/U-Turn/Knock Off which provides great support for the team and Flare Blitz to beat steel types. Choice Band Zygarde is a good option even though I could go with DD to pressure your opponent as well because Zygarde has really nice bulk and you can also put screens up with Koko, but it still gives an offensive presence. Cresselia with Helping Hand and Ally Switch makes it easier for the team to take out threats and other bulky supporters. Ban Ally Switch.