I've never played competitive and after reading a couple smogon articles, this is what I've came up with. I still need help though!
White (Incineroar) @ Heavy-Duty Boots
Ability: Intimidate
Shiny: Yes
EVs: 252 HP / 4 Atk / 252 SpD
Careful Nature
- Knock Off
- Flare Blitz
- Parting Shot
- Toxic
:) (Mienshao) @ Choice Scarf
Ability: Regenerator
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Close Combat
- Knock Off
- U-turn
- Stone Edge
Mumie (Slowking) (F) @ Heavy-Duty Boots
Ability: Regenerator
Shiny: Yes
EVs: 252 HP / 192 Def / 64 SpD
Calm Nature
IVs: 0 Atk
- Future Sight
- Psyshock
- Scald
- Teleport
Precious (Obstagoon) (F) @ Flame Orb
Ability: Guts
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Facade
- Knock Off
- Close Combat
- Switcheroo
Kelpy (Keldeo) @ Choice Specs
Ability: Justified
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Hydro Pump
- Secret Sword
- Icy Wind
- Flip Turn
Weezing-Galar @ Black Sludge
Ability: Levitate
EVs: 212 HP / 252 SpA / 44 Spe
Modest Nature
- Sludge Bomb
- Strange Steam
- Fire Blast
- Toxic Spikes
