I wouldn't use 2 poisons here's what I use it works in battle spot singles aswell:
Salamence @Salamencite
Trait: Intimidate- though it doesn't really matter as it will be aerialate though I like getting the Pokémon to ×0.67 attack.
Adamant Nature
EVs: 252 Atk/252 spe/4 HP
-return
-Earthquake
Dragon Dance
Protect
At max affection Salamencite destroys with 102 base power on return which gets stab bonus because of aerialate so it gets to around 150 power. Earthquake hits all of types return (flying) is not very effective. Dragon Dance is a good Stat move raising Atk and Spe. Protect is protect.
Blaziken @ Focus Sash
Trait: speed boost
EVs: 252 Atk/ 4 SpD / 252 Spe
-Blaze Kick
-High jump kick
-Hone claws
- Stone edge
Always set up a Hone claws because Sash can hold on and high jump kick wreaks havoc. Blaze Kick is a Great STAB and stone ede deals with all of its weakness'.
Aegislash @ weakness policy
Evs: 252 HP/ 252 SpA / 4 SpD
0 ivs in speed
Ability: Stance Change
Quiet nature
-shadow sneak
King's shield
-shadow ball
-Sacred Sword
Aegislash's low speed almost guarantees that you will be is sheild forme to take an attack. Shadow Sneak is priority to take down any pokemon on 1 HP. Shadow ball and sacred Sword are just amazing.
Blaziken can be replaced by
Toxapex @ Black Sludge
EVs: 252 HP / 232 Def / 24 Spe
Trait: regenerator
Bold Nature
-Scald
-Toxic
-Baneful Bunker
-recover
Regenerator, Baneful Bunker and recover almost guarantee it won't die and Scald had a 30% chance to burn as well as Toxic will poison it so if you screw up you can just status it to death with its bulkyness and moveset.
Aegislash can be replaced by
Golisopod @ Expert belt
EVs: 4 HP / 252 Atk / 252 Spe
Trait: emergency exit
Adamant Nature
-First Impression
-Liquidation
-Brick break
-Protect
Fist impression are both solid STAB moves with good damage. Brick Break gets rid of normal types walls such as eviolite chansey or Leftovers blissey and protect is always useful.
Hope this helped