Well, I have done this team after I realized that it is very unusual for a flying attack to come at you from a non-flying pokémon. So i thought chesnaught and raikou could form a core. This is where i stabilized on ladder and its the most successful team I did in SM UU so far, so I wanted to get some feedback to start off this gen on my right feet.
Building Process:
As stated above, I started with Chesnaught and Raikou. The first originally had bulk up and whatever flying menace that could come over would be dealt with the second guy.
Then I thought bisharp and clefable could do well together as clef could set rocks while sharp would scare defoggers out.
There was at this point an obvious fire weakness within the team, and also thinking on hazard control i brought in Mega-Blastoise.
Last but not least the scarf user which I think is mandatory on a meta with mega-aero. I figured out Infernape could do well here and went for it.
Later on I subbed Clefable for Togekiss, because I had trouble when facing stall. This is how the team looks like:
A nice replay where I still had (SPdef) Clefable:
http://replay.pokemonshowdown.com/gen7uu-560514970
Chesnaught (M) @ Leftovers
Ability: Bulletproof
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
- Spiky Shield
- Drain Punch
- Leech Seed
- Spikes
Originally it was bulk up over spikes but when togekiss subbed in for clefable i lost my hazard setter so switched for spikes to compensate.
Raikou @ Normalium Z
Ability: Pressure
Shiny: Yes
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Calm Mind
- Hyper Beam
- Thunderbolt
- Hidden Power Ice
Pretty standard set, got some doubts whether should I use shadow ball or not, because this team can possibly benefit from it.
Bisharp (M) @ Life Orb
Ability: Defiant
Shiny: Yes
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Swords Dance
- Sucker Punch
- Knock Off
- Iron Head
Haven't elaborated much here, sucker punch is still mind games and to be honest I haven't caught a single defog boost yet. Maybe Scizor is more appropriate for this team.
Togekiss (M) @ Leftovers
Ability: Serene Grace
EVs: 252 HP / 4 SpA / 252 SpD
Calm Nature
IVs: 0 Atk
- Heal Bell
- Wish
- Air Slash
- Nasty Plot
How to deal with stall, basically.
Blastoise-Mega (M) @ Blastoisinite
Ability: Mega Launcher
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
IVs: 0 Atk
- Dark Pulse
- Aura Sphere
- Ice Beam
- Rapid Spin
Hazard removal, usually comes in taking damage, went for non-water moves in an attempt to maximize coverage.
Infernape (M) @ Choice Scarf
Ability: Blaze
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- U-turn
- Close Combat
- Thunder Punch
- Gunk Shot
High coverage attacker with gunk shot for clefable and thunder punch for Primarina/Starmie/Aero.
Threats: Well I'm a little blind when it comes to these but I think I can point a few being Raikou itself, some strong specs sweepers like swellow, Clefable after my main atackers are worn down, Mega-aero can still be an issue although I have some ways to deal with it.

Building Process:
As stated above, I started with Chesnaught and Raikou. The first originally had bulk up and whatever flying menace that could come over would be dealt with the second guy.
Then I thought bisharp and clefable could do well together as clef could set rocks while sharp would scare defoggers out.
There was at this point an obvious fire weakness within the team, and also thinking on hazard control i brought in Mega-Blastoise.
Last but not least the scarf user which I think is mandatory on a meta with mega-aero. I figured out Infernape could do well here and went for it.
Later on I subbed Clefable for Togekiss, because I had trouble when facing stall. This is how the team looks like:






A nice replay where I still had (SPdef) Clefable:
http://replay.pokemonshowdown.com/gen7uu-560514970
Chesnaught (M) @ Leftovers
Ability: Bulletproof
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
- Spiky Shield
- Drain Punch
- Leech Seed
- Spikes
Raikou @ Normalium Z
Ability: Pressure
Shiny: Yes
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Calm Mind
- Hyper Beam
- Thunderbolt
- Hidden Power Ice
Bisharp (M) @ Life Orb
Ability: Defiant
Shiny: Yes
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Swords Dance
- Sucker Punch
- Knock Off
- Iron Head
Togekiss (M) @ Leftovers
Ability: Serene Grace
EVs: 252 HP / 4 SpA / 252 SpD
Calm Nature
IVs: 0 Atk
- Heal Bell
- Wish
- Air Slash
- Nasty Plot
Blastoise-Mega (M) @ Blastoisinite
Ability: Mega Launcher
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
IVs: 0 Atk
- Dark Pulse
- Aura Sphere
- Ice Beam
- Rapid Spin
Infernape (M) @ Choice Scarf
Ability: Blaze
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- U-turn
- Close Combat
- Thunder Punch
- Gunk Shot
Ability: Bulletproof
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
- Spiky Shield
- Drain Punch
- Leech Seed
- Spikes
Raikou @ Normalium Z
Ability: Pressure
Shiny: Yes
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Calm Mind
- Hyper Beam
- Thunderbolt
- Hidden Power Ice
Bisharp (M) @ Life Orb
Ability: Defiant
Shiny: Yes
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Swords Dance
- Sucker Punch
- Knock Off
- Iron Head
Togekiss (M) @ Leftovers
Ability: Serene Grace
EVs: 252 HP / 4 SpA / 252 SpD
Calm Nature
IVs: 0 Atk
- Heal Bell
- Wish
- Air Slash
- Nasty Plot
Blastoise-Mega (M) @ Blastoisinite
Ability: Mega Launcher
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
IVs: 0 Atk
- Dark Pulse
- Aura Sphere
- Ice Beam
- Rapid Spin
Infernape (M) @ Choice Scarf
Ability: Blaze
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- U-turn
- Close Combat
- Thunder Punch
- Gunk Shot

Chesnaught (M) @ Leftovers
Ability: Bulletproof
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
- Spiky Shield
- Drain Punch
- Leech Seed
- Spikes
Originally it was bulk up over spikes but when togekiss subbed in for clefable i lost my hazard setter so switched for spikes to compensate.

Raikou @ Normalium Z
Ability: Pressure
Shiny: Yes
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Calm Mind
- Hyper Beam
- Thunderbolt
- Hidden Power Ice
Pretty standard set, got some doubts whether should I use shadow ball or not, because this team can possibly benefit from it.

Bisharp (M) @ Life Orb
Ability: Defiant
Shiny: Yes
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Swords Dance
- Sucker Punch
- Knock Off
- Iron Head
Haven't elaborated much here, sucker punch is still mind games and to be honest I haven't caught a single defog boost yet. Maybe Scizor is more appropriate for this team.

Togekiss (M) @ Leftovers
Ability: Serene Grace
EVs: 252 HP / 4 SpA / 252 SpD
Calm Nature
IVs: 0 Atk
- Heal Bell
- Wish
- Air Slash
- Nasty Plot
How to deal with stall, basically.

Blastoise-Mega (M) @ Blastoisinite
Ability: Mega Launcher
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
IVs: 0 Atk
- Dark Pulse
- Aura Sphere
- Ice Beam
- Rapid Spin
Hazard removal, usually comes in taking damage, went for non-water moves in an attempt to maximize coverage.

Infernape (M) @ Choice Scarf
Ability: Blaze
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- U-turn
- Close Combat
- Thunder Punch
- Gunk Shot
High coverage attacker with gunk shot for clefable and thunder punch for Primarina/Starmie/Aero.
Threats: Well I'm a little blind when it comes to these but I think I can point a few being Raikou itself, some strong specs sweepers like swellow, Clefable after my main atackers are worn down, Mega-aero can still be an issue although I have some ways to deal with it.