Crazy Eight - Metagross Offense
https://pokepast.es/9294972d5c3b0cd2
Hey y'all! I saw this thread and knew I had to share this demonic creation. This team was built around Psychium-Z Metagross and Adamant QA Lop. I figured this would be worth using since I see so much T-spikes + Reuniclus and vanilla offense on high ladder. While the team is kinda matchup-fishy, it's able to withstand many common teamstyles in the current meta and seeing Pex get OHKO'd boosts my serotonin.

The team's weakness to standard steel types like Celesteela, Kartana, and M-Scizor is noticeable. While Magnezone doesn't automatically counter them, its role of weakening/KOing them is essential to make Metagross and Landorus-T more threatening. Choice scarf also helps against offensive pressure from mons like Mega-Pinsir, Kyurem-Black, and weakened Mega-Medicham.

Mega-Lopunny remains a great choice for revenge-killing speedy offensive threats despite its weakness to stall and hard balance. Running Adamant on this build is risky and a little greedy, but this team really appreciates the extra damage done by Fake Out and Quick Attack to scarf Landorus-T, Volcarona, and other sweepers/cleaners. Being outsped by Greninja, Tornadus-T, and Tapu Koko may not be worth the extra damage to some players, so Jolly is also a fine choice.

Fini is a must on this kind of team. Its role as a defogger, Hawlucha/Ash-Gren check, terrain setter, and Knock Off user provides valuable utility against a variety of teamstyles and it can make progress in pretty much every game. I tweaked the EVs on its standard spread to make sure Moonblast KOs what its supposed to and take physical attacks better.

Another no-brainer pick. Scarf provides further speed control and Punishment lets it do massive damage to bulky boosting threats like Reuniclus, Mega Latias, Manaphy, and Serperior.

The nucleus and inspiration for this team. It's far from "splashable", but it does have several unique traits that make it stand out as a breaker. It can switch in [once or twice] and threaten big damage on Clefable, Bulu, Fini, Kyurem-Black, and AV Magearna, while also packing priority for Weavile and Mega-Diancie. Although it's far from a reliable Tapu Lele check, it does force it out and uses its psychic terrain for a boosted Zen Headbutt. Also, it can OHKO Heatran, scarf Landorus-T, bulky Tornadus-T (with rocks up), Toxapex, Kommo-O, and Mega-Venusaur with the combination of Psychium-Z and Earthquake, making it nigh-unwallable once steels are removed.
Edit: An alternative spread with 76 HP and 180 Spe can give Metagross favorable odds to live Jolly Mega-Swampert EQ from full health, scarf Lando-T EQ, Jolly Excadrill EQ after rocks (50% roll vs Adamant Drill w/o rocks), bulky Volcarona Flamethrower, 2 Adamant Banded Bulu Superpowers, and 2 Specs Lele Moonblasts, while also guaranteeing it lives Kyurem-Black's Icium Z + Fusion Bolt and it outspeeds Modest Magnezone. However, you lose out on outspeeding bulky Rotom-W and speed-tieing Adamant base 70s.

Lastly, the feature mon for this week. Its presence on the team isn't as flashy as Z-Metagross or Adamant double-priority Lop, but it's the defensive glue that holds it all together. It switches into Ash-gren, Blacephalon, Mega-Charizard Y, non-gleam Tapu Koko, Serperior, Mega-Tyranitar, Zapdos, and Heatran without much issue, using its switch-in opportunities to get up Stealth Rock and stop status moves with Taunt. Taunt is also useful for messing with Trick Room, recovery, bulky set-up sweepers, and defog attempts from Rotom-W, Zapdos, Helmet Lando, and [slow] Gliscor. Close Combat is necessary for its damage output and HP Ice dents Helmet Landorus-T and Gliscor. Finally, I know Gentle nature is nasty work but it allows Kommo-O to 2HKO Sp. Def Gliscor after rocks while letting it still act as a Sp. Def check. Speed investment is for the rare Breloom and Bisharp.
Edit: Rock Slide can also be run over HP Ice if you're more fearful of Blaceph, Volcarona, and Zard Y than Gliscor, Lando-T, and Garchomp. Taunt could also be dropped hypothetically, but a 3-atk set struggles to prevent opposing hazards from defensive structures with passive setters like Seismitoad, Toxapex, Hippo, Helmet Lando, and Skarm.
THREATS:

What's a switch-in?

Metagross is the best check on this team so...

Keep Landorus at full health or play perfectly

Such a pain to pivot around so form a solid gameplan

HP Fire, Gunk Shot, and Ice Beam smoke this team

Priority spam and scarf Landorus check it, but good luck switching in

This team has offensive checks to it, but pick one when it's at +3

Scarf and Z-move require some finesse to wear down/remove

Misty Terrain + Lop checks offensive spreads well, but bulky Volc is scary unless you opt for Rock Slide on Kommo-O

Your best bet is chipping it into range with Kommo-O or Fini and letting the other check Ash-Gren
REPLAYS:
https://replay.pokemonshowdown.com/gen7ou-2186702397-7vaum0mvawnkm6sp3nrv3gg3ezjykm9pw
https://replay.pokemonshowdown.com/gen7ou-2188685901-civ1nvk7ooi545y27v4e20r7vb0i7ompw
https://replay.pokemonshowdown.com/gen7ou-2187746609-osqv7i3ctm280clsox1o0jnodmjy00gpw
https://replay.pokemonshowdown.com/gen7ou-2187981253-ooubo4pyizshj9svp6vml41r64qp34vpw
https://replay.pokemonshowdown.com/gen7ou-2193895224-xem2g4v74ub17xm32goln7b2l1x0b1ppw
https://replay.pokemonshowdown.com/gen7ou-2221109404-yp6pi5i3ih5zqknb62kqxpkxcd5vl4rpw