Which moves lower the speed of the user?

Question

Basically, Magnemite seems like a monster Gyro Ball LC sweeper, IF it's -6 speed. So, how can a gyroball mon or a batonpasser lower their own speed?

Comments

If you just want to answer your question, you can read https://bulbapedia.bulbagarden.net/wiki/Stat_modifier
I would very much recommend against using a gyro ball Magnemite. Gyro ball's base power goes up to 150, and Magnemite's low physical attack means even a 150 base power move won't do much damage. Magnemite also has low special defense and 3 weaknesses, which means it's pretty easy to revenge-kill. Use Diglett or Pawniard (with iron head) if you want a physical offensive steel.

Answer 1

Only 5 moves lower the users speed, these are:

• Ice Hammer
• Spin Out
• Curse
• V-Create
• Hammer Arm
  Source for the moves.

All the Pokémon that learn these moves are:

Ice Hammer
- Crabominable
- Tinkatink
- Tinkatuff
- Tinkaton
- Smeargle

Spin Out
- Varoom
- Revavroom
- Smeargle

V-Create
- Victini

Hammer Arm
- Snorlax
- Sudowoodo
- Ursaring
- Slaking
- Regirock
- Regice
- Registeel
- Groudon
- Rhyperior
- Regigigas
- Timburr
- Gurdurr
- Conkeldurr
- Golett
- Golurk
- Tornadus
- Tornadus (Therian)
- Thundurus
- Thundurus (Therian)
- Landorus
- Landorus (Therian)
- Chesnaught
- Grimmsnarl
- Zarude
- Regidrago
- Ursaluna
- Ursaluna (Bloodmoon)
- Rhydon
- Metagross
- Reuniclus
- Garganacl
- Geodude
- Elekid
- Slakoth
- Vigoroth
- Cranidos
- Grookey
- Thwackey
- Rillaboom
- Smeargle

Curse
- Slowpoke
- Slowpoke (Galarian)
- Slowbro
- Slowbro (Galarian)
- Slowking
- Slowking (Galarian)
- Gastly
- Haunter
- Gengar
- Pineco
- Forretress
- Numel
- Camerupt
- Torkoal
- Shuppet
- Banette
- Duskull
- Dusclops
- Dusknoir
- Regirock
- Regice
- Registeel
- Turtwig
- Grotle
- Torterra
- Spiritomb
- Zorua (Hisuian)
- Zoroark (Hisuian)
- Litwick
- Lampent
- Chandelure
- Golett
- Golurk
- Goomy
- Sliggoo
- Sliggoo (Hisuian)
- Goodra
- Goodra (Hisuian)
- Phantump
- Trevenant
- Bergmite
- Avalugg
- Avalugg (Hisuian)
- Appletun
- Polteageist
- Pincurchin
- Bramblin
- Brambleghast
- Bulbasaur
- Ivysaur
- Venusaur
- Seel
- Dewgong
- Exeggcute
- Exeggutor
- Exeggutor (Alolan)
- Rhyhorn
- Rhydon
- Magmar
- Lapras
- Chikorita
- Bayleef
- Meganium
- Totodile
- Croconaw
- Feraligatr
- Chinchou
- Lanturn
- Snubbull
- Granbull
- Skarmory
- Magby
- Lugia
- Torchic
- Combusken
- Blaziken
- Mudkip
- Marshtomp
- Swampert
- Cranidos
- Rampardos
- Shieldon
- Bastiodon
- Rhyperior
- Magmortar
- Tepig
- Pignite
- Emboar
- Drilbur
- Excadrill
- Scraggy
- Scrafty
- Hydrapple
- Pecharunt
- Sandshrew (Alolan)
- Meowth (Galarian)
- Mankey
- Primeape
- Geodude
- Geodude (Alolan)
- Grimer
- Muk
- Koffing
- Tauros
- Tauros (Paldean)
- Tauros (Paldean Blaze Breed)
- Tauros (Paldean Aqua Breed)
- Eevee
- Vaporeon
- Jolteon
- Flareon
- Cyndaquil
- Quilava
- Typhlosion
- Typhlosion (Hisuian)
- Sudowoodo
- Sunkern
- Sunflora
- Wooper
- Wooper (Paldean)
- Quagsire
- Clodsire
- Espeon
- Umbreon
- Misdreavus
- Dunsparce
- Dudunsparce
- Dudunsparce (Three-Segment)
- Slugma
- Swinub
- Larvitar
- Pupitar
- Tyranitar
- Slakoth
- Vigoroth
- Slaking
- Gulpin
- Swalot
- Tropius
- Shellos (East)
- Gastrodon (East)
- Mismagius
- Chingling
- Bonsly
- Munchlax
- Hippopotas
- Hippowdon
- Leafeon
- Glaceon
- Chespin
- Quilladin
- Chesnaught
- Sylveon
- Sandygast
- Palossand
- Mimikyu
- Perrserker
- Stonjourner
- Cufant
- Copperajah
- Dreepy
- Drakloak
- Dragapult
- Fuecoco
- Crocalor
- Skeledirge
- Nacli
- Naclstack
- Garganacl
- Orthworm
- Dondozo
- Annihilape
- Smeargle

Hope this helped you out!

Ice Hammer Source
Spin Out Source
Curse Source
V-Create Source
Hammer Arm Source

Comments

Please let me know if I made any typos or forgot a pokemon.

Answer 2

Curse
Hammer Arm
Ice Hammer
V-create

Source
Thanks to sumwun. I may have missed one or two

Comments

I think the only one you missed is spin out. May be worth noting you could use a speed boosting move on a pokemon with Contrary as well.