Submitting this sample team. This is a bulky offensive team with solid offensive and defensive synergy. Greninja-Ash and MMY can tag team lots of defensive cores with their coverage and the fact that they aren't choiced; you just have to play them carefully because they get worn down throughout a long game, but this is good because Imposter can only switch in 2 or 3 times (it takes 25-35% from the strongest attack from either one with eviolite). Both are improofed by Arc-Fairy. Arc-Fairy is also your knock off absorber and totally counters Greninja-ash, and Earth Plate Judgment 2hkos Mega Gengar so you can pull off a Rapid Spin against those. Darm-Z can court change hazards against hazard stack happy teams and burns and knocks stuff off, but is still afraid of Arc-Ghost, so hazard teams with that can be troublesome. FC Dialga can switch in on Regigigas, Zacian-C, Ho-Oh, beedrill and zamac, and can check Primal Groudon, MMX and Garchomp-mega if they haven't gotten attack boosts. Meloetta can also switch in on Mega Gengar and threaten it with paras, and can also counter Psysurge MMY or at least force it to be open to pursuit from Ashgren on a sac; it is improofed by darm-z.
replays:
https://replay.pokemonshowdown.com/gen8nationaldexbh-1202808228
Just a great replay showing Dialga chipping Zacian-C, which is pretty threatening to the rest of the team, so that Arc-Fairy can take it down later on. A lucky lava plume burn saves me from Mega Garchomp, which would have killed me otherwise.
https://replay.pokemonshowdown.com/gen8nationaldexbh-1203059627-vgaadfuokl6xfwh8tz447348xk7q2tdpw Copy
Vs. Dimra. A full team effort to take down Dimra's stall team, with the crucial paralysis on Pikachu being Meloetta's only, yet significant, contribution. Greninja really comes through here as well. Skip the last 100 turns which is just Imposter pp stall wars.
Greninja-Ash (F) @ Metronome
Ability: Adaptability
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 Spe
Naive Nature
- Steam Eruption
- Wicked Blow
- Ice Beam
- Pursuit
Arceus-Fairy @ Earth Plate
Ability: Water Absorb
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe
Sassy Nature
IVs: 0 Atk
- Judgment
- Recover
- Moonblast
- Rapid Spin
Dialga @ Rocky Helmet
Ability: Fur Coat
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe
Relaxed Nature
- Core Enforcer
- Spectral Thief
- Shore Up
- Anchor Shot
Darmanitan-Zen @ Toxic Orb
Ability: Poison Heal
Happiness: 0
Hidden Power: Dark
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe
Calm Nature
- Strength Sap
- Court Change
- Knock Off
- Lava Plume
Mewtwo-Mega-Y @ Life Orb
Ability: Sheer Force
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Earth Power
- Moonblast
- Psychic
- Steam Eruption
Meloetta @ Leftovers
Ability: Prankster
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe
Sassy Nature
IVs: 0 Atk
- Haze
- Soft-Boiled
- Boomburst
- Glare
Ability: Adaptability
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 Spe
Naive Nature
- Steam Eruption
- Wicked Blow
- Ice Beam
- Pursuit
Arceus-Fairy @ Earth Plate
Ability: Water Absorb
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe
Sassy Nature
IVs: 0 Atk
- Judgment
- Recover
- Moonblast
- Rapid Spin
Dialga @ Rocky Helmet
Ability: Fur Coat
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe
Relaxed Nature
- Core Enforcer
- Spectral Thief
- Shore Up
- Anchor Shot
Darmanitan-Zen @ Toxic Orb
Ability: Poison Heal
Happiness: 0
Hidden Power: Dark
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe
Calm Nature
- Strength Sap
- Court Change
- Knock Off
- Lava Plume
Mewtwo-Mega-Y @ Life Orb
Ability: Sheer Force
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Earth Power
- Moonblast
- Psychic
- Steam Eruption
Meloetta @ Leftovers
Ability: Prankster
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe
Sassy Nature
IVs: 0 Atk
- Haze
- Soft-Boiled
- Boomburst
- Glare
replays:
https://replay.pokemonshowdown.com/gen8nationaldexbh-1202808228
Just a great replay showing Dialga chipping Zacian-C, which is pretty threatening to the rest of the team, so that Arc-Fairy can take it down later on. A lucky lava plume burn saves me from Mega Garchomp, which would have killed me otherwise.
https://replay.pokemonshowdown.com/gen8nationaldexbh-1203059627-vgaadfuokl6xfwh8tz447348xk7q2tdpw Copy
Vs. Dimra. A full team effort to take down Dimra's stall team, with the crucial paralysis on Pikachu being Meloetta's only, yet significant, contribution. Greninja really comes through here as well. Skip the last 100 turns which is just Imposter pp stall wars.