I'm gonna do like GL Volkner and post a team as a sample, for the same reasons.
https://pokepast.es/b720cb29ad5441e3
Brief description: MMY is the first attacker of the team, hitting hard without caring about recoil moves and life orb. Psystrike is mainly for kyogre and for not giving away your ability immediately. Photon geyser hits shedinja and ensures that MMY can hit both defenses with stab. It's improofed by both Fur Coat Chansey and Registeel. Running Earth Power over one of the stab moves means that you no longer are walled by FF steels (not celesteela but it takes a lot from other moves) but it means that Fur Coat Chansey is your only improof.
Registeel: FF to take on fire coverage and to ignore bouncing will-o-wisps. Ideally you'll want to burn as much as you can. It's the defogger of the team.
Giratina: MB to check spraying of hazards, poison heal (not fairies), and opposing dragons due to core enforcer + griseous. Because this team doesn't use poison heal, i'm free to run a moveslot for heal bell. Hard counters arceus' imposter (not a plated one).
Chansey (fur coat): The glue of the team; it serves nothing but passing huge wishes to the rest of the team and punish set up with metal burst if they dare to hit it.
Chansey (imposter): It's eviolite imposter. When it is not, fake out breaks illusion (gonna be pointless if it ends up banned), toxic spikes pressures the opponents, parting shot is for pivoting end encore screws momentum for minimum speed pokemon or predicted setup. It's situational anyway as you need to not transform.
Arceus requires more than a brief description because it's an uncommon set.
It's dragon because giratina can its imposter SE. Normal typing + taunt checks a multitude of anti-setup options and even if they are unaware you can disable their recovery and break them anyway. Arceus has a fair natural bulk of 120/x3 and while it likes to be healthy it can afford to take a hit or two while it sets up tailglow. Speed boost patches up the not so good speed and you can use the chance (once) to lure in fast but frail pokemons and KO 'em with either boomburst or judgement. This usually happens by switching in (on a u-turn or with baton pass), set up a tailglow and let the opponent safe pivot something in; then speed boost start accumulating boosts, in particular after the opponent has switched in something that you can lure. For the same reasons against imposter you have a guaranteed outspeed on non-scarfed variants if it doesn't begin its turn on the field; depending on how much hp it has left and on how much arceus has boosted you can bring it down on the spot. At +0 it's pointless, at +3 you do 39.2% - 46.1%, at +6 you do 62.6% - 73.7%. It's easier without eviolite (suicidal with scarf tho) but it's quite good anyway.
I'm gonna pick the tier list up and including B to show how it does.
Because it's arceus, you never lose access to ghost judgement (switchin on koff and trick with impunity). It keeps healthy by having chansey wishpassing 80% hp. Giratina hard counters the imposter unless it has a plate (in which case you are fried unless it taunts itself and you kill it with metal burst).
Flint has seen the team in action I guess it counts for examples, if not then I'll post replays.
EDIT:
https://replay.pokemonshowdown.com/gen7balancedhackmonssuspecttest-784607667 --> this replay is relevant as it shows arceus breaking through unaware chansey. Because it is robbed of both recovery and haze, it cannot deal with arceus even if boomburst 7hkoes, and the opponent forfeits (and prankster aegislash switching in on +6 judg didn't help either) as the rest of the team is ohkoed.
https://pokepast.es/b720cb29ad5441e3
Brief description: MMY is the first attacker of the team, hitting hard without caring about recoil moves and life orb. Psystrike is mainly for kyogre and for not giving away your ability immediately. Photon geyser hits shedinja and ensures that MMY can hit both defenses with stab. It's improofed by both Fur Coat Chansey and Registeel. Running Earth Power over one of the stab moves means that you no longer are walled by FF steels (not celesteela but it takes a lot from other moves) but it means that Fur Coat Chansey is your only improof.
Registeel: FF to take on fire coverage and to ignore bouncing will-o-wisps. Ideally you'll want to burn as much as you can. It's the defogger of the team.
Giratina: MB to check spraying of hazards, poison heal (not fairies), and opposing dragons due to core enforcer + griseous. Because this team doesn't use poison heal, i'm free to run a moveslot for heal bell. Hard counters arceus' imposter (not a plated one).
Chansey (fur coat): The glue of the team; it serves nothing but passing huge wishes to the rest of the team and punish set up with metal burst if they dare to hit it.
Chansey (imposter): It's eviolite imposter. When it is not, fake out breaks illusion (gonna be pointless if it ends up banned), toxic spikes pressures the opponents, parting shot is for pivoting end encore screws momentum for minimum speed pokemon or predicted setup. It's situational anyway as you need to not transform.
Arceus requires more than a brief description because it's an uncommon set.
It's dragon because giratina can its imposter SE. Normal typing + taunt checks a multitude of anti-setup options and even if they are unaware you can disable their recovery and break them anyway. Arceus has a fair natural bulk of 120/x3 and while it likes to be healthy it can afford to take a hit or two while it sets up tailglow. Speed boost patches up the not so good speed and you can use the chance (once) to lure in fast but frail pokemons and KO 'em with either boomburst or judgement. This usually happens by switching in (on a u-turn or with baton pass), set up a tailglow and let the opponent safe pivot something in; then speed boost start accumulating boosts, in particular after the opponent has switched in something that you can lure. For the same reasons against imposter you have a guaranteed outspeed on non-scarfed variants if it doesn't begin its turn on the field; depending on how much hp it has left and on how much arceus has boosted you can bring it down on the spot. At +0 it's pointless, at +3 you do 39.2% - 46.1%, at +6 you do 62.6% - 73.7%. It's easier without eviolite (suicidal with scarf tho) but it's quite good anyway.
I'm gonna pick the tier list up and including B to show how it does.
Mega Mewtwo Y --> ohkoed at +3 judgement
Mega Rayquaza --> ohkoed at +3 boomburst
Diancie-Mega --> 82.2 - 97% at +3 judgement, ohkoed at +6
Giratina --> 6.3% ohkoed when +spd, 62.5% ohkoed otherwise at +3 judjement, ohkoed at +6 unless +spd assault vest (43.8% of ohko)
Kyogre-Primal --> 82.6% - 97.5% when neutral at +3 boomburst, ohkoed at +6 unless assault vest (25% of ohko) (but what's the plan for "stop +6 arceus while running AV" anyway)
Gengar-Mega --> 68.5% - 80.8% at +0 judgement, ohkoed at +3 judgement (goes past normalize as usual)
Registeel --> 2hkoed at +3 judgement, 80.2 - 94.5% at +6 judgement
Regigigas/Slaking --> ohkoed at +3 boomburst (both)
Mewtwo-Mega-X --> ohkoed at +3 with either move
Xerneas --> ohkoed at +3 boomburst unless +spd
Zygarde-C --> 76.1% - 89.6% at +3 boomburst, ohkoed at +6 boomburst unless assault vest
Audino-Mega --> 81.3% when neutral, 25% when spd+ at +3 boomburst
Dialga --> 2hkoed at +3 with either move, ohkoed at +6 judgement unless AV
Groudon/Pdon --> ohkoed at +3 boomburst
Kangaskhan --> ohkoed at +3 boomburst
Shedinja -->
Solgaleo --> ohkoed at +3 judgement, at +6 even after AV
Chansey --> 2hkoed at +6 boomburst, you die to metal burst but without it you can taunt to win
Kartana --> 2hkoed at +0 with either move, ohkoed at +3 with either move
Necrozma Dusk-Mane --> ohkoed at +3 judgement, at +6 even after AV
Tyranitar-Mega --> 98.8 2hkoed when spd+ and AV/sand, clean 2hkoed otherwise (at +6 boomburst)
Yveltal --> ohkoed at +3 boomburst unless +spd (68.8% of ohko), at +6 even after AV
Arceus --> 56.3% ohkoed at +3 boomburst when neutral, 6.3% when +spd, +6 even after neutral AV (50% with +spd) (soundproof is like shedinja here)
Aegislash --> ohkoed at +3 judgement
Ferrothorn --> 2hkoed at +3 with either move, 93.6% ohkoed at +6 judgement
Garchomp-Mega --> ohkoed at +3 boomburst
Gyarados-Mega --> 93.8% ohkoed at neutral +3 boomburst (37.5% otherwise), ohkoed at +6 boomburst
Kyurem-B --> ohkoed at +3 boomburst
Sceptile-Mega --> ohkoed at +3 boomburst
Slowbro-Mega --> ohkoed at +3 with either move
Zekrom --> ohkoed at +3 boomburst
Blaziken-Mega --> ohkoed at +3 boomburst
Celesteela --> 2hkoed at +3 with either move
Kyurem-W --> ohkoed at +3 boomburst, 81.3% of ohkoed with spd+, ohkoed otherwise
Necrozma-Ultra --> ohkoed at +3 with either move
Swampert-Mega --> ohkoed at neutral +3 boomburst (93.8% spd+)
Mega Rayquaza --> ohkoed at +3 boomburst
Diancie-Mega --> 82.2 - 97% at +3 judgement, ohkoed at +6
Giratina --> 6.3% ohkoed when +spd, 62.5% ohkoed otherwise at +3 judjement, ohkoed at +6 unless +spd assault vest (43.8% of ohko)
Kyogre-Primal --> 82.6% - 97.5% when neutral at +3 boomburst, ohkoed at +6 unless assault vest (25% of ohko) (but what's the plan for "stop +6 arceus while running AV" anyway)
Gengar-Mega --> 68.5% - 80.8% at +0 judgement, ohkoed at +3 judgement (goes past normalize as usual)
Registeel --> 2hkoed at +3 judgement, 80.2 - 94.5% at +6 judgement
Regigigas/Slaking --> ohkoed at +3 boomburst (both)
Mewtwo-Mega-X --> ohkoed at +3 with either move
Xerneas --> ohkoed at +3 boomburst unless +spd
Zygarde-C --> 76.1% - 89.6% at +3 boomburst, ohkoed at +6 boomburst unless assault vest
Audino-Mega --> 81.3% when neutral, 25% when spd+ at +3 boomburst
Dialga --> 2hkoed at +3 with either move, ohkoed at +6 judgement unless AV
Groudon/Pdon --> ohkoed at +3 boomburst
Kangaskhan --> ohkoed at +3 boomburst
Shedinja -->

Solgaleo --> ohkoed at +3 judgement, at +6 even after AV
Chansey --> 2hkoed at +6 boomburst, you die to metal burst but without it you can taunt to win
Kartana --> 2hkoed at +0 with either move, ohkoed at +3 with either move
Necrozma Dusk-Mane --> ohkoed at +3 judgement, at +6 even after AV
Tyranitar-Mega --> 98.8 2hkoed when spd+ and AV/sand, clean 2hkoed otherwise (at +6 boomburst)
Yveltal --> ohkoed at +3 boomburst unless +spd (68.8% of ohko), at +6 even after AV
Arceus --> 56.3% ohkoed at +3 boomburst when neutral, 6.3% when +spd, +6 even after neutral AV (50% with +spd) (soundproof is like shedinja here)
Aegislash --> ohkoed at +3 judgement
Ferrothorn --> 2hkoed at +3 with either move, 93.6% ohkoed at +6 judgement
Garchomp-Mega --> ohkoed at +3 boomburst
Gyarados-Mega --> 93.8% ohkoed at neutral +3 boomburst (37.5% otherwise), ohkoed at +6 boomburst
Kyurem-B --> ohkoed at +3 boomburst
Sceptile-Mega --> ohkoed at +3 boomburst
Slowbro-Mega --> ohkoed at +3 with either move
Zekrom --> ohkoed at +3 boomburst
Blaziken-Mega --> ohkoed at +3 boomburst
Celesteela --> 2hkoed at +3 with either move
Kyurem-W --> ohkoed at +3 boomburst, 81.3% of ohkoed with spd+, ohkoed otherwise
Necrozma-Ultra --> ohkoed at +3 with either move
Swampert-Mega --> ohkoed at neutral +3 boomburst (93.8% spd+)
Flint has seen the team in action I guess it counts for examples, if not then I'll post replays.
EDIT:
https://replay.pokemonshowdown.com/gen7balancedhackmonssuspecttest-784607667 --> this replay is relevant as it shows arceus breaking through unaware chansey. Because it is robbed of both recovery and haze, it cannot deal with arceus even if boomburst 7hkoes, and the opponent forfeits (and prankster aegislash switching in on +6 judg didn't help either) as the rest of the team is ohkoed.
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