I started with Stoutland, who is a really underrated threat in the current meta and has very few reliable switch-ins.
Next, I added CM + Thunder Wave Clefairy, as it can switch into Fighting-type attacks that Stoutland struggles to take, it adds a win condition to the team, and it provides Thunder Wave support, which helps Stoutland to wipe away common teams.
Next, I was looking for a reliable Stealth Rocker, as well as a check to Shell Smash Carracosta and Barbaracle, and Torterra fit the bill.
I noticed that Grumpig synergizes really well with the rest of my team, and I didn't have much special attacking presence on the team yet, so I added offensive Grumpig.
I noticed that I sorta got pooped on my Life Orb Simipour and Life Orb Ninetales after a Nasty Plot, and although the team isn't weak to hazards, I decided to add Specially Defensive Pelipper to help check strong special attackers.
The rest of my team was looking really slow, and I didn't have a solid Jumpluff check or a Pokemon that is ok with being put to sleep, so I added Zebstrika, which rounds off the team.
Stoutland @
252 Atk / 4 SpD / 252 Spe | Adamant
Frustration | Facade | Superpower | Pursuit
Stoutland is who I built the team around, and for good reason. There are so few reliable switch-ins and it's insane the amount of work you can do with it if you bring it in off of a double. You're mainly spamming Frustration or Superpower depending if the opponent has a Normal-type resist and Facade if you're inflicted with status. Pursuit is helpful for trapping Pokemon like Kadabra and Grumpig, but it's rare you'll use it.
Clefairy @
248 HP / 252 Def / 8 SpA | Bold
Calm Mind | Moonblast | Thunder Wave | Soft-Boiled
Torterra @
248 HP / 252 Atk / 8 Spe | Adamant
Stealth Rock | Wood Hammer | Earthquake | Synthesis
Torterra was a pretty easy choice as a Stealth Rocker since it checks a lot of common Pokemon in the tier, it has reliable recovery, and it hits hard. I just went with the standard tank set which is mainly to help check Carracosta and Barbaracle after a Shell Smash. If you're switching Torterra into a lot of hits, make sure to use Synthesis often to stay alive throughout games.
Grumpig @
160 HP / 252 SpA / 96 Spe | Modest
Psychic | Focus Blast | Taunt | Toxic
Pelipper @
248 HP / 8 SpA / 252 SpD | Calm
U-turn | Scald | Roost | Defog
Ah, Pelipper. Ever since later in ORAS, the only Pelipper people used was physically defensive, but recently with the spike in usage of Pokemon like Ninetales and Simipour, specially defensive Pelipper has become really popular. I chose U-turn over Air Slash to get Stoutland in safely, which is overall more helpful than being able to hit Poliwrath, which I have a few checks for already. The team isn't that weak to Stealth Rock, but spikestack would definitely be a pain without this thing, which is why I added it.
Zebstrika @
252 SpA / 4 SpD / 252 Spe
Volt Switch | Thunderbolt | Overheat | Hidden Power Ice
Stoutland @ Choice Band
Ability: Scrappy
Happiness: 0
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Frustration
- Facade
- Superpower
- Pursuit
Clefairy @ Eviolite
Ability: Magic Guard
EVs: 248 HP / 252 Def / 8 SpA
Bold Nature
- Calm Mind
- Moonblast
- Thunder Wave
- Soft-Boiled
Torterra @ Leftovers
Ability: Overgrow
EVs: 248 HP / 252 Atk / 8 Spe
Adamant Nature
- Stealth Rock
- Wood Hammer
- Earthquake
- Synthesis
Grumpig @ Leftovers
Ability: Thick Fat
EVs: 160 HP / 252 SpA / 96 Spe
Modest Nature
- Psychic
- Focus Blast
- Taunt
- Toxic
Pelipper @ Leftovers
Ability: Keen Eye
EVs: 248 HP / 8 SpA / 252 SpD
Calm Nature
- U-turn
- Scald
- Roost
- Defog
Zebstrika @ Life Orb
Ability: Sap Sipper
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Volt Switch
- Thunderbolt
- Overheat
- Hidden Power [Ice]
Ability: Scrappy
Happiness: 0
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Frustration
- Facade
- Superpower
- Pursuit
Clefairy @ Eviolite
Ability: Magic Guard
EVs: 248 HP / 252 Def / 8 SpA
Bold Nature
- Calm Mind
- Moonblast
- Thunder Wave
- Soft-Boiled
Torterra @ Leftovers
Ability: Overgrow
EVs: 248 HP / 252 Atk / 8 Spe
Adamant Nature
- Stealth Rock
- Wood Hammer
- Earthquake
- Synthesis
Grumpig @ Leftovers
Ability: Thick Fat
EVs: 160 HP / 252 SpA / 96 Spe
Modest Nature
- Psychic
- Focus Blast
- Taunt
- Toxic
Pelipper @ Leftovers
Ability: Keen Eye
EVs: 248 HP / 8 SpA / 252 SpD
Calm Nature
- U-turn
- Scald
- Roost
- Defog
Zebstrika @ Life Orb
Ability: Sap Sipper
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Volt Switch
- Thunderbolt
- Overheat
- Hidden Power [Ice]