-Rocky Helmet now generates 50% of the time on Pokemon that have recovery, have an HP and Defense stat sum of over 200, don't have setup, and aren't weak to fighting, if they don't have a higher priority item. This affects Eternatus, Morning Sun Solgaleo, Hippowdon, non-setup Chesnaught, non-setup Deoxys-Defense, non-setup Pecharunt, Corviknight, and non-setup Skarmory.
-the existing Lum Berry users (Kingdra, Haxorus, Flygon, Roaring Moon, Flapple, Regidrago, and Archaludon) now run Lum Berry 50% less often, and will get Life Orb (or in Archaludon's case, Leftovers) instead. Flapple will continue to have a 50% chance to get Wide Lens with Dragon Dance.
-Non-Sticky Web Vikavolt (i.e. Specs and Agility) no longer exists. Choice Specs will only generate if the team already has a Sticky Web user.
-RestTalk Calm Mind Spiritomb no longer exists. Instead, Spiritomb can now sometimes get Toxic.
-Garganacl's sets have been restructured so that both Protect and Stealth Rock can exist together, as well as allowing either Body Press or Earthquake with either Protect or Stealth Rock.
-Hisuian Zoroark now has a Fast Attacker Life Orb set with Poltergeist, Hyper Voice, Focus Blast, and Will-O-Wisp. Tera Normal/Fighting.
-Gastrodon now has a second set with Tera Poison Sludge Bomb.
-Iron Crown now has an AV Pivot set with Future Sight, Psychic Noise, Psyshock, Tachyon Cutter, Volt Switch, and Focus Blast. Tera Steel only, for technical reasons.
-Bulky Attacker Regidrago is now Setup Sweeper and does not run Fire Fang. Yes, this does mean it now can run Dragon Dance and Draco Meteor at the same time.
-Swords Dance Archaludon is now Bulky Setup role, to give it Leftovers with the new Lum Berry reduction.
-Tera Blast Thundurus-Incarnate now runs Defiant.
-Support Masquerain: -Ice Beam
-Sableye: -Foul Play
-Mandibuzz: -Foul Play on Brave bird set, +Knock Off on non-Brave Bird set
-Support Ribombee: -Psychic Noise, +Bug Buzz
-Hoopa: +Psychic
-AV Eelektross: -Thunderbolt, +Discharge
-Fast Attacker Electivire: -Wild Charge, +Supercell Slam (i'm still sorry)
-Froslass: +Tera Ice
Reversions:
-Dipplin will regain Sucker Punch because its removal was neutral.
-Brute Bonnet's Synthesis set will be removed entirely because Sucker Punch did not increase its winrate.
-Dusknoir will regain Life Orb.
-Empoleon and Torterra will lose their new sets from last update.
Gen 9 Random Doubles:
-Terapagos now runs a third set with Meteor Beam.
-Thundurus now runs a third set with itemless Acrobatics.
-Tauros-Paldea-Combat now has an additional Choice Band set.
-Stonjourner now has an additional Choice Scarf/Band set with Rock Slide.
-Dusknoir now runs an additional Trick Room set of Trick Room, Poltergeist, Leech Life, and Protect with Tera Dark.
-Wyrdeer now runs an additional Trick Room set of Trick Room, Double-Edge, Psychic, and Earth Power with Tera Fairy/Ground.
-Zebstrika's sets have been split to guarantee High Horsepower and optimize its tera types depending on its abilities.
-Regirock has gained basically a copy of Registeel's set but with Rock STABs as a set 2.
-Maushold is now always Technician and no longer runs Helping Hand.
-Amoonguss now has a second set with Sludge Bomb instead of Clear Smog.
-Ariados's abilities are no longer hardcoded to be only Insomnia. I do not know with certainty what it runs now.
-Carbink, Regirock, and Tentacruel now always run Clear Body.
-Kricketune now always runs Knock Off.
-Vespiquen now always runs Pollen Puff.
-Vikavolt: +Electroweb (only appears if team has a Sticky Web user), role changed to Bulky Protect
-Morpeko Set 1: +Electroweb, role changed to Bulky Protect
-Weavile has finally caught up to the rest of the format and runs Triple Axel instead of Ice Spinner.
-Persian-Alola: -Quash, +Icy Wind
-Support Ribombee: -Sticky Web, -U-turn, -Tera Dark, +Moonblast, +Tera Steel
-Support Masquerain: -Sticky Web, +Protect
-Corviknight: -Defog
-Mandibuzz: -Defog (Defog no longer exists in Gen 9 Random Doubles)
-Calyrex: +Psychic, +Giga Drain, +Leech Seed
-Inteleon: -U-turn, +Muddy Water
-Komala: -Play Rough, -Tera Fairy
-Tropius: +Protect
-AV Conkeldurr: -Poison Jab, +Ice Punch
-Bulky Rhyperior: +Protect
-Alolan Muk: -Rock Tomb
-Articuno, Quagsire, Support Empoleon: +Icy Wind
-Kleavor, support Gliscor: +Tailwind
-Chimecho, Giratina, Support Tyranitar: +Thunder Wave
-Rotom-Wash, Rotom-Fan, Doubles Bulky Attacker Iron Thorns, Bulky Protect Raikou: +Electroweb
-Oinkolognes: support is now always Ghost/Normal Tera. Wallbreaker is now always Fairy/Normal/Ground Tera.
-Hitmontop: -Tera Dark
-Charizard: +Tera Dragon
-Houndoom: -Tera Water, +Tera Grass
-Sudowoodo: -Tera Steel
-Support Delibird: +Tera Ground
Old Gens:
-In Gens 5-7, Stantler is now always Intimidate.
-In Gens 5-7, Accelgor now sometimes runs U-turn and no longer runs Yawn or a Grass-type move.
-In gens 5-7, Zoroark no longer runs Choice Scarf.
-In Gens 6-7, Yveltal no longer runs Foul Play.
-In gens 6-7, Heliolisk and Galvantula no longer run HP Ice.
-In Gens 6-7, Tangrowth now runs Sludge Bomb instead of HP Fire.
-In Gens 6-7, Volcanion now runs Toxic instead of Substitute.
-In Gens 6-7, Furfrou now runs Dark Pulse instead of Sucker Punch.
-In gens 6-7, Dragonite now runs only Dragon Dance sets, and doesn't run Extreme Speed. Roost is included!
-In Gens 6-7, Muk now runs Brick Break instead of Fire Punch.
-In Gens 6-7, Gourgeist now runs Frisk always.
-In gens 6-7, Scolipede now only runs Protect with its setup set.
-In gens 6-7, Setup Dustox now runs HP Ground.
-In gens 6-7, Doublade no longer runs Toxic.
-In gens 6-7, Persian will no longer run Unnerve.
-In gens 6-7, Mightyena now sometimes runs Toxic and can now hold a Life Orb.
-In Gens 5-4, Absol's sets have been optimized to always have Sucker Punch, and Fire Blast has been removed.
-In Gens 5-4, Dragonite now runs a Choice Band set with Superpower and a Dragon Dance set with Outrage, Earthquake, and Fire Punch/Roost, instead of the sets it ran before.
-In Gen 8, Falinks now runs Iron Head instead of Poison Jab.
-In Gen 8, Gothitelle, Beheeyem, and Meowstic-F now run Dark Pulse instead of Shadow Ball.
-In Gen 7, Butterfree and Mothim now have a Buginium Z set.
-In Gen 7, Lopunny now has a Z-Splash set. (+3 Attack)
-In Gen 7, Glaceon now has a Z-Celebrate set with Hidden Power Ground and Stored Power.
-In Gen 7, Tapu Fini will no longer get both Surf and Hydro Pump at the same time.
-In Gen 7, Vikavolt no longer runs HP Ice.
-In Gen 7, Silvally-Fighting now runs Crunch and Rock Slide and no longer runs Shadow Claw.
-In Gen 7, Celesteela now runs Heavy Slam on its Autotomize set instead of Flash Cannon, because it truly is that heavy.
-In gen 7, Zygarde-10% will no longer run Lum Berry Coil if the team does not have a Z-Move user yet, and the Z-Move user set can now run Iron Tail.
-In Gen 5, Vespiquen now runs Flying Gem Acrobatics instead of Air Slash.
-In Gen 3, Calm Mind variants of Girafarig and Xatu can now run Early Bird Rest. CM Xatu no longer runs Giga Drain, and CM Girafarig no longer runs WishTect.
-In Gen 3, Metagross will no longer run Psychic with Choice Band.
-In Gen 3, Castform now runs Fire Blast instead of Flamethrower
-In Gen 3, Feraligatr now always runs Earthquake
-In Gen 3, Cloyster now sometimes does not run Ice Beam.
-In Gen 3, Torkoal now no longer runs Yawn.
-In Gen 3, Lickitung now runs Earthquake instead of Flamethrower on its Bulky Attacker set.
-In Gen 2, Furret, Hitmontop, and Hitmonchan no longer run Mint Berry Rest on their Setup Sweeper sets.
-In Gen 2, Setup Sweeper Scyther no longer exists; it will now always be Baton Pass.
-In Gen 2, Bulky Attacker Gyarados now runs Surf.
-In Gen 2, the Clefable set that has both Return and Thunder Wave now doesn't.
-In Gen 2, Sneasel now runs HP Ground over Iron Tail, and the Thief set now runs Moonlight over Shadow Ball.
-In Gen 2, Qwilfish now runs Hidden Power Ground.
Gen 9
-Rocky Helmet now generates 50% of the time on Pokemon that have recovery, have an HP and Defense stat sum of over 200, don't have setup, and aren't weak to fighting, if they don't have a higher priority item. This affects Eternatus, Morning Sun Solgaleo, Hippowdon, non-setup Chesnaught, non-setup Deoxys-Defense, non-setup Pecharunt, Corviknight, and non-setup Skarmory. -the existing Lum Berry users (Kingdra, Haxorus, Flygon, Roaring Moon, Flapple, Regidrago, and Archaludon) now run Lum Berry 50% less often, and will get Life Orb (or in Archaludon's case, Leftovers) instead. Flapple will continue to have a 50% chance to get Wide Lens with Dragon Dance.
-Non-Sticky Web Vikavolt (i.e. Specs and Agility) no longer exists. Choice Specs will only generate if the team already has a Sticky Web user. -RestTalk Calm Mind Spiritomb no longer exists. Instead, Spiritomb can now sometimes get Toxic. -Garganacl's sets have been restructured so that both Protect and Stealth Rock can exist together, as well as allowing either Body Press or Earthquake with either Protect or Stealth Rock. -Hisuian Zoroark now has a Fast Attacker Life Orb set with Poltergeist, Hyper Voice, Focus Blast, and Will-O-Wisp. Tera Normal/Fighting. -Gastrodon now has a second set with Tera Poison Sludge Bomb. -Iron Crown now has an AV Pivot set with Future Sight, Psychic Noise, Psyshock, Tachyon Cutter, Volt Switch, and Focus Blast. Tera Steel only, for technical reasons. -Bulky Attacker Regidrago is now Setup Sweeper and does not run Fire Fang. Yes, this does mean it now can run Dragon Dance and Draco Meteor at the same time. -Swords Dance Archaludon is now Bulky Setup role, to give it Leftovers with the new Lum Berry reduction. -Tera Blast Thundurus-Incarnate now runs Defiant.
-Support Masquerain: -Ice Beam -Sableye: -Foul Play -Mandibuzz: -Foul Play on Brave bird set, +Knock Off on non-Brave Bird set -Support Ribombee: -Psychic Noise, +Bug Buzz -Hoopa: +Psychic -AV Eelektross: -Thunderbolt, +Discharge -Fast Attacker Electivire: -Wild Charge, +Supercell Slam (i'm still sorry) -Froslass: +Tera Ice
Reversions: -Dipplin will regain Sucker Punch because its removal was neutral. -Brute Bonnet's Synthesis set will be removed entirely because Sucker Punch did not increase its winrate. -Dusknoir will regain Life Orb. -Empoleon and Torterra will lose their new sets from last update.
Gen 9 Random Doubles:
-Terapagos now runs a third set with Meteor Beam. -Thundurus now runs a third set with itemless Acrobatics. -Tauros-Paldea-Combat now has an additional Choice Band set. -Stonjourner now has an additional Choice Scarf/Band set with Rock Slide. -Dusknoir now runs an additional Trick Room set of Trick Room, Poltergeist, Leech Life, and Protect with Tera Dark. -Wyrdeer now runs an additional Trick Room set of Trick Room, Double-Edge, Psychic, and Earth Power with Tera Fairy/Ground. -Zebstrika's sets have been split to guarantee High Horsepower and optimize its tera types depending on its abilities. -Regirock has gained basically a copy of Registeel's set but with Rock STABs as a set 2. -Maushold is now always Technician and no longer runs Helping Hand. -Amoonguss now has a second set with Sludge Bomb instead of Clear Smog. -Ariados's abilities are no longer hardcoded to be only Insomnia. I do not know with certainty what it runs now. -Carbink, Regirock, and Tentacruel now always run Clear Body. -Kricketune now always runs Knock Off. -Vespiquen now always runs Pollen Puff.
-Vikavolt: +Electroweb (only appears if team has a Sticky Web user), role changed to Bulky Protect -Morpeko Set 1: +Electroweb, role changed to Bulky Protect -Weavile has finally caught up to the rest of the format and runs Triple Axel instead of Ice Spinner. -Persian-Alola: -Quash, +Icy Wind -Support Ribombee: -Sticky Web, -U-turn, -Tera Dark, +Moonblast, +Tera Steel -Support Masquerain: -Sticky Web, +Protect -Corviknight: -Defog -Mandibuzz: -Defog (Defog no longer exists in Gen 9 Random Doubles) -Calyrex: +Psychic, +Giga Drain, +Leech Seed -Inteleon: -U-turn, +Muddy Water -Komala: -Play Rough, -Tera Fairy -Tropius: +Protect -AV Conkeldurr: -Poison Jab, +Ice Punch -Bulky Rhyperior: +Protect -Alolan Muk: -Rock Tomb -Articuno, Quagsire, Support Empoleon: +Icy Wind -Kleavor, support Gliscor: +Tailwind -Chimecho, Giratina, Support Tyranitar: +Thunder Wave -Rotom-Wash, Rotom-Fan, Doubles Bulky Attacker Iron Thorns, Bulky Protect Raikou: +Electroweb -Oinkolognes: support is now always Ghost/Normal Tera. Wallbreaker is now always Fairy/Normal/Ground Tera. -Hitmontop: -Tera Dark -Charizard: +Tera Dragon -Houndoom: -Tera Water, +Tera Grass -Sudowoodo: -Tera Steel -Support Delibird: +Tera Ground
Old Gens:
-In Gens 5-7, Stantler is now always Intimidate. -In Gens 5-7, Accelgor now sometimes runs U-turn and no longer runs Yawn or a Grass-type move. -In gens 5-7, Zoroark no longer runs Choice Scarf. -In Gens 6-7, Yveltal no longer runs Foul Play. -In gens 6-7, Heliolisk and Galvantula no longer run HP Ice. -In Gens 6-7, Tangrowth now runs Sludge Bomb instead of HP Fire. -In Gens 6-7, Volcanion now runs Toxic instead of Substitute. -In Gens 6-7, Furfrou now runs Dark Pulse instead of Sucker Punch. -In gens 6-7, Dragonite now runs only Dragon Dance sets, and doesn't run Extreme Speed. Roost is included! -In Gens 6-7, Muk now runs Brick Break instead of Fire Punch. -In Gens 6-7, Gourgeist now runs Frisk always. -In gens 6-7, Scolipede now only runs Protect with its setup set. -In gens 6-7, Setup Dustox now runs HP Ground. -In gens 6-7, Doublade no longer runs Toxic. -In gens 6-7, Persian will no longer run Unnerve. -In gens 6-7, Mightyena now sometimes runs Toxic and can now hold a Life Orb. -In Gens 5-4, Absol's sets have been optimized to always have Sucker Punch, and Fire Blast has been removed. -In Gens 5-4, Dragonite now runs a Choice Band set with Superpower and a Dragon Dance set with Outrage, Earthquake, and Fire Punch/Roost, instead of the sets it ran before. -In Gen 8, Falinks now runs Iron Head instead of Poison Jab. -In Gen 8, Gothitelle, Beheeyem, and Meowstic-F now run Dark Pulse instead of Shadow Ball. -In Gen 7, Butterfree and Mothim now have a Buginium Z set. -In Gen 7, Lopunny now has a Z-Splash set. (+3 Attack) -In Gen 7, Glaceon now has a Z-Celebrate set with Hidden Power Ground and Stored Power. -In Gen 7, Tapu Fini will no longer get both Surf and Hydro Pump at the same time. -In Gen 7, Vikavolt no longer runs HP Ice. -In Gen 7, Silvally-Fighting now runs Crunch and Rock Slide and no longer runs Shadow Claw. -In Gen 7, Celesteela now runs Heavy Slam on its Autotomize set instead of Flash Cannon, because it truly is that heavy. -In gen 7, Zygarde-10% will no longer run Lum Berry Coil if the team does not have a Z-Move user yet, and the Z-Move user set can now run Iron Tail. -In Gen 5, Vespiquen now runs Flying Gem Acrobatics instead of Air Slash. -In Gen 3, Calm Mind variants of Girafarig and Xatu can now run Early Bird Rest. CM Xatu no longer runs Giga Drain, and CM Girafarig no longer runs WishTect. -In Gen 3, Metagross will no longer run Psychic with Choice Band. -In Gen 3, Castform now runs Fire Blast instead of Flamethrower -In Gen 3, Feraligatr now always runs Earthquake -In Gen 3, Cloyster now sometimes does not run Ice Beam. -In Gen 3, Torkoal now no longer runs Yawn. -In Gen 3, Lickitung now runs Earthquake instead of Flamethrower on its Bulky Attacker set. -In Gen 2, Furret, Hitmontop, and Hitmonchan no longer run Mint Berry Rest on their Setup Sweeper sets. -In Gen 2, Setup Sweeper Scyther no longer exists; it will now always be Baton Pass. -In Gen 2, Bulky Attacker Gyarados now runs Surf. -In Gen 2, the Clefable set that has both Return and Thunder Wave now doesn't. -In Gen 2, Sneasel now runs HP Ground over Iron Tail, and the Thief set now runs Moonlight over Shadow Ball. -In Gen 2, Qwilfish now runs Hidden Power Ground.