This is a balance team, I weaken the team with my walls and throw a few attacks around, then clean up with my offensive Pokemons.
Blaziken @ Life Orb
Ability: Speed Boost
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
IVs: 0 SpA
- Swords Dance
- Flare Blitz
- Close Combat
- Thunder Punch
Clefable @ Leftovers
Ability: Magic Guard
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
IVs: 0 Atk
- Teleport
- Moonblast
- Wish
- Protect
Swampert @ Rocky Helmet
Ability: Torrent
EVs: 252 HP / 252 Def / 4 SpD
Impish Nature
IVs: 0 SpA
- Stealth Rock
- Flip Turn
- Earthquake
- Yawn
Tapu Koko @ Choice Specs
Ability: Electric Surge
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Thunderbolt
- Dazzling Gleam
- Grass Knot
- Volt Switch
Corviknight @ Leftovers
Ability: Pressure
EVs: 252 HP / 28 Def / 228 SpD
Careful Nature
IVs: 0 SpA
- Defog
- Roost
- U-turn
- Brave Bird
Garchomp @ Leftovers
Ability: Rough Skin
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
IVs: 0 SpA
- Swords Dance
- Dragon Claw
- Earthquake
- Stone Edge
What I usually try to do is get rocks up with Swampert, then Yawn to force the opponent to either switch or fall asleep. I Flip Turn to see what my opponent does. If they give me an opportunity and stay in to do anything, I can bring in Blaziken when they're asleep, set up and sweep. Else I go into another Pokemon depending upon their switch.
Clefable is to keep my Swampert healthy so that it gets more opportunities to force the opponent to make difficult decisions. Corviknight is to help Defog hazards and screens . Tapu Koko is another good pivot and a good cleaner, for when Blaziken doesn't manage to take the entire team out.
Garchomp is filler, to fight Pokemons which rely on Paralysis support and check Electric Types, which the team is weak to. I want a better option here, but can't see any better options.