What is a good Battle Facility team for Generation 6?

Question

Share your best competitive teams for Generation 6’s battle facilities on this thread! Your team should be made to beat any of the battle facilities as efficiently as possible.

The Battle facilities in Generation 6 is/are:
Battle Institute - Pokemon X/Y/Omega Ruby/Alpha Sapphire
Battle Maison - Pokemon X/Y/Omega Ruby/Alpha Sapphire

Before submitting your team, please read the following guidelines and make adjustments where they fit.

• Make sure you show in your answer which facility this team is for battling in.

• Include your recommended Pokemon in your answer, each with recommended moves for use in the Battle Facility.

• Remember that players may be unable to access certain Pokemon, such as those restricted by version exclusivity or trade evolutions. If you'd like to suggest a Pokemon like this, please mention alternative/s.

• Please post original teams. Do not post teams made by other people, such as Youtubers.

• Provide explanation and detail. Justify your Pokemon and moveset choices; possible discussion points include ease-of-use, team synergy and coverage for key battles.

• Submit your team as an answer, not a comment. To keep things tidy, we will remove any teams posted as comments in this thread. If you simply want to update your post, use the 'edit' button.

Answer 1

This is for the Battle Institute, for singles, as I can't really do doubles without hidden abilities :(.

So, without any delay, let us start :) Oh fine, one more delay. I will be composing my team of a mixed tank, a specially offensive Pokemon, and a physically offensive Pokemon.

First, for my mixedish tank, Clefable.

Clefable @ Leftovers
Ability: Any ability works, Magic Guard is preferred
EVs: 252 HP/252 Def/4 SpDef
Bold Nature
- Stealth Rock (If you have access to the move tutor)/Ice Beam
- Calm Mind
- Moonblast
- Soft Boiled (If you can transfer it from a gen 3 game)/Flamethrower

Charizard @ Charizardite-Y
Ability: Drought
EVs: 252 SpAtk/4 SpDef/252 Spe
Timid Nature
- Flamethrower
- Solar Beam
- Tailwind
- Roost

Azumarill @ Life Orb
Ability: Huge Power
EVs: 252 Atk/4 Def/252 Spe
Adamant Nature
- Superpower
- Play Rough
- Knock Off
- Waterfall/Aqua Jet (If you can get the egg move lol)

Answer 2

ORAS Battle Maison Singles
This team is balanced. One (Mega) special attacker, one physical, and one staller for a pretty even core. After a bit of trial and error, I even got to a 50-streak with this team. I will say that the Battle Maison is quite intelligent in choosing teams, but not so much with choosing moves, so using Bulbapedia’s list of trainers in the Maison and their Pokémon really help with prediction.

Gardevoir-Mega @ Gardevoirite
Ability: Trace
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Hyper Voice
- Psyshock
- Energy Ball
- Shadow Ball

The special powerhouse, Mega Gardevoir functions as an effective sweeper capable of taking down the numerous Water-Ground types such as Seismitoad and Gastrodon as well as the extremely annoying bulky waters like Slowbro. Hyper Voice becomes extremely broken with Pixilate and STAB, Psyshock for STAB and Shadow Ball for coverage against other problematic Psychics. You can hold off on Mega Evolving on the rare occasion you Trace a good ability like Water Absorb from Vaporeon.

Garchomp @ Life Orb
Ability: Rough Skin
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Earthquake
- Fire Fang
- Stone Edge
- Swords Dance

The physical powerhouse, with great coverage in EQ and Stone Edge. Fire Fang helps take down problematic mons such as Scizor, while Swords Dance can be abused on more passive mons since the Maison has a vendetta against switching. Avoid Waters (and obviously Ice-types) like the plague, due to Waters frequently carrying Ice Beam. However, sometimes you can outspeed and OHKO with a boosted Stone Edge or EQ.

Skarmory @ Leftovers
Ability: Sturdy
EVs: 252 HP / 4 Atk / 252 SpD
Careful Nature
- Iron Head
- Roost
- Whirlwind
- Stealth Rock

The team’s staller and phazer. SR and Whirlwind make a great combo, as well as for scouting the team and accumulating hazard damage. Iron Head to not be Taunt fodder, and Roost + Leftovers for longevity. Sometimes this thing can solo whole teams due to Iron Head & SR. SpD investment to have a chance at outliving Flamethrowers or Thunderbolts.