Gen 9 Random Battle:
-Thundurus now has a third set: Bulky Attacker, with itemless Acrobatics; it's otherwise mostly identical to the first set but without Nasty Plot or Sludge Wave.
-Pincurchin now has a second set: Bulky Setup, with Curse, Zing Zap, Liquidation, and Recover. Tera Water/Grass, with Leftovers.
-Wet Tauros's sets have been split between Life Orb Bulk Up Liquidation and Choice Band Wave Crash. The Cud Chew set is unaffected, but will now appear less often.
-Quagsire's Liquidation set no longer exists. It no longer runs a Water-type move ever.
-Bulky Setup, and therefore Leftovers, Urshifu-Rapid-Strike no longer exists.
-Hustle Delibird now doesn't always run Ice Shard.
-Terapagos now runs Heavy-Duty Boots when it doesn't have Rest. Rock Polish was moved back to Rapid Spin as a result.
-Guts Luxray now always runs Trailblaze.
-Support Deo-S: +Superpower, +Tera Fighting
-Pincurchin: -Thunderbolt, +Discharge
-Life Orb 4 Attacks Lokix: -Axe Kick, -Tera Fighting, +Knock Off
-Zamazenta: -Wild Charge
-Tera Blast Lilligant: -Pollen Puff, +Alluring Voice
-Salazzle: -Tera Water, +Tera Grass
-SD Cacturne: +Knock Off, +Tera Poison (Knock Off and Drain Punch are a roll with each other)
-Smeargle: -Stone Axe, -Lunar Dance, +Stealth Rock, +Whirlwind
-Wugtrio: -Sucker Punch
-Non-Screens Grimmsnarl: -Sucker Punch, +Throat Chop
-Special Reshiram: +Tera Ground
-Toxicroak: -Ice Punch, +Earthquake, +Tera Ground on the Setup Sweeper set
-Iron Moth: -Discharge
-Necrozma-Dusk-Mane: -Moonlight, +Morning Sun (For flavor!)
-CM Primarina (Both CM sets): +Tera Steel
-Camerupt: -Fire Blast, +Overheat
-LO Copperajah: -Tera Steel (now always runs Play Rough)
The following changes are being made after winrate analysis:
-Nasty Plot Lucario: +Aura Sphere
-Seed Sower Arboliva: -Leaf Storm, +Energy Ball
-Araquanid: -Lunge, +Leech Life
-Calm Mind Cobalion: -Focus Blast
-Vaporeon: -Tera Steel
-Venomoth: -Morning Sun
-Support Chimecho: -Dazzling Gleam, -Tera Fairy
-Bulk Up Electivire now runs Supercell Slam and Life Orb again
Gen 9 Random Doubles:
-Alolan Sandslash now runs an Assault Vest set instead of a Swords Dance set.
-Lapras's Life Orb set was removed.
-Nasty Plot Plusle: -Baton Pass, +Protect
-Doubles Support Lanturn: -Eerie Impulse, +Thunderbolt
-Malamar: -Baton Pass
Old Gens:
-In gens 7-5, Beheeyem now always runs Analytic
-In gens 7-5, Gardevoir now always runs Trace.
-In gens 7-5, Guts Luxray no longer runs Ice Fang.
-In gens 7-5, Swords Dance Gliscor is now always EQ + SD + Roost + Facade.
-In gens 7-5, Cherrim now has a Staller set with Aromatherapy, Energy Ball (or Giga in 5), HP Ground (or Nature Power in 5), Leech Seed, Morning Sun, and Toxic. The other set also now runs Morning Sun over Synthesis for flavor.
-In gens 7-5, Sunflora now has a Sunny Day set.
-In gens 7-5, Rotom-Mow no longer runs HP Ice.
-In gens 7-6, Cherrim now runs Choice Specs instead of Choice Scarf.
-In gens 7-6, regular Mawile now runs Leftovers.
-In gens 7-6, regular Banette now runs Thunder Wave over Destiny Bond.
-In gens 7-6, regular Altaria's support set now runs Heal Bell.
-In gens 7-6, support Lunatone now runs Earth Power over Moonblast.
-In gens 7-6, Mega Aerodactyl now always runs Earthquake and no longer runs Fire Fang.
-In gens 7-6, Mega Lopunny now runs Encore over Ice Punch.
-In gens 7-6, regular Blaziken now has a Swords Dance set.
-In gen 7, Necrozma now has a Swords Dance set.
-In gen 7, Passimian now has a Bulk Up Drain Punch set.
-In gen 7, the Latis now run Soul Dew when they do not qualify for a Choice item.
-In gen 7, Mega Kangaskhan now has a Power-Up Punch set with Earthquake.
-In gens 6 and 4, Snorlax no longer runs Whirlwind.
-In gens 5-4, Abomasnow no longer runs Focus Blast.
-In gen 5, Dusclops is now Seismic Toss instead of Night Shade.
-In gen 4, Illumise no longer runs Thunderbolt.
-In gen 4, Volbeat now has a set with Tail Glow, Roost, Bug Buzz, and Baton Pass.
-In gen 4, Dustox now runs HP Ground.
Broken Cup and Doubles Broken Cup:
Tera Shell, Doodle, and all Z-Crystals will no longer appear in either singles or doubles Broken Cup.
-Thundurus now has a third set: Bulky Attacker, with itemless Acrobatics; it's otherwise mostly identical to the first set but without Nasty Plot or Sludge Wave.
-Pincurchin now has a second set: Bulky Setup, with Curse, Zing Zap, Liquidation, and Recover. Tera Water/Grass, with Leftovers.
-Wet Tauros's sets have been split between Life Orb Bulk Up Liquidation and Choice Band Wave Crash. The Cud Chew set is unaffected, but will now appear less often.
-Quagsire's Liquidation set no longer exists. It no longer runs a Water-type move ever.
-Bulky Setup, and therefore Leftovers, Urshifu-Rapid-Strike no longer exists.
-Hustle Delibird now doesn't always run Ice Shard.
-Terapagos now runs Heavy-Duty Boots when it doesn't have Rest. Rock Polish was moved back to Rapid Spin as a result.
-Guts Luxray now always runs Trailblaze.
-Support Deo-S: +Superpower, +Tera Fighting
-Pincurchin: -Thunderbolt, +Discharge
-Life Orb 4 Attacks Lokix: -Axe Kick, -Tera Fighting, +Knock Off
-Zamazenta: -Wild Charge
-Tera Blast Lilligant: -Pollen Puff, +Alluring Voice
-Salazzle: -Tera Water, +Tera Grass
-SD Cacturne: +Knock Off, +Tera Poison (Knock Off and Drain Punch are a roll with each other)
-Smeargle: -Stone Axe, -Lunar Dance, +Stealth Rock, +Whirlwind
-Wugtrio: -Sucker Punch
-Non-Screens Grimmsnarl: -Sucker Punch, +Throat Chop
-Special Reshiram: +Tera Ground
-Toxicroak: -Ice Punch, +Earthquake, +Tera Ground on the Setup Sweeper set
-Iron Moth: -Discharge
-Necrozma-Dusk-Mane: -Moonlight, +Morning Sun (For flavor!)
-CM Primarina (Both CM sets): +Tera Steel
-Camerupt: -Fire Blast, +Overheat
-LO Copperajah: -Tera Steel (now always runs Play Rough)
The following changes are being made after winrate analysis:
-Nasty Plot Lucario: +Aura Sphere
-Seed Sower Arboliva: -Leaf Storm, +Energy Ball
-Araquanid: -Lunge, +Leech Life
-Calm Mind Cobalion: -Focus Blast
-Vaporeon: -Tera Steel
-Venomoth: -Morning Sun
-Support Chimecho: -Dazzling Gleam, -Tera Fairy
-Bulk Up Electivire now runs Supercell Slam and Life Orb again
Gen 9 Random Doubles:
-Alolan Sandslash now runs an Assault Vest set instead of a Swords Dance set.
-Lapras's Life Orb set was removed.
-Nasty Plot Plusle: -Baton Pass, +Protect
-Doubles Support Lanturn: -Eerie Impulse, +Thunderbolt
-Malamar: -Baton Pass
Old Gens:
-In gens 7-5, Beheeyem now always runs Analytic
-In gens 7-5, Gardevoir now always runs Trace.
-In gens 7-5, Guts Luxray no longer runs Ice Fang.
-In gens 7-5, Swords Dance Gliscor is now always EQ + SD + Roost + Facade.
-In gens 7-5, Cherrim now has a Staller set with Aromatherapy, Energy Ball (or Giga in 5), HP Ground (or Nature Power in 5), Leech Seed, Morning Sun, and Toxic. The other set also now runs Morning Sun over Synthesis for flavor.
-In gens 7-5, Sunflora now has a Sunny Day set.
-In gens 7-5, Rotom-Mow no longer runs HP Ice.
-In gens 7-6, Cherrim now runs Choice Specs instead of Choice Scarf.
-In gens 7-6, regular Mawile now runs Leftovers.
-In gens 7-6, regular Banette now runs Thunder Wave over Destiny Bond.
-In gens 7-6, regular Altaria's support set now runs Heal Bell.
-In gens 7-6, support Lunatone now runs Earth Power over Moonblast.
-In gens 7-6, Mega Aerodactyl now always runs Earthquake and no longer runs Fire Fang.
-In gens 7-6, Mega Lopunny now runs Encore over Ice Punch.
-In gens 7-6, regular Blaziken now has a Swords Dance set.
-In gen 7, Necrozma now has a Swords Dance set.
-In gen 7, Passimian now has a Bulk Up Drain Punch set.
-In gen 7, the Latis now run Soul Dew when they do not qualify for a Choice item.
-In gen 7, Mega Kangaskhan now has a Power-Up Punch set with Earthquake.
-In gens 6 and 4, Snorlax no longer runs Whirlwind.
-In gens 5-4, Abomasnow no longer runs Focus Blast.
-In gen 5, Dusclops is now Seismic Toss instead of Night Shade.
-In gen 4, Illumise no longer runs Thunderbolt.
-In gen 4, Volbeat now has a set with Tail Glow, Roost, Bug Buzz, and Baton Pass.
-In gen 4, Dustox now runs HP Ground.
Broken Cup and Doubles Broken Cup:
Tera Shell, Doodle, and all Z-Crystals will no longer appear in either singles or doubles Broken Cup.