Landorus-Therian@Choice Scarf
Intimidate
252 Att/252 Spe/4 HP
Jolly Nature
-U turn
-Earthquake
-Knock Off
-Hp Ice
Usually the Pokemon that starts off with either U-turn or Knock off, while also intimidating the opponent. Earthquake is his best STAB, but not so spammable in the beginning due to abundant Flying-types/Levitates/Grassy Surge and Hp Ice is for opposing Landorus and Garchomp/Dragonite, though it is maybe better to replace it with Stone Edge? Choice Scarf boosts its offensive viability.
Pheromosa@Silver Powder
Beast Boost
252 Att/252 Spe/4 Def
Naive Nature
-U turn
-High Jump Kick
-Poison Jab
-Ice Beam
To start off, don't tell me to remove the Muscle Band with a Life Orb, because I loathe recoil. The move-set is pretty straightforward. It has one of the best, if not the best, U-turn of the game. High Jump Kick is just too good to not include, though the misses are very painful. Poison Jab and Ice Beam are the best coverage moves it has. (I can't wait till it gets Knock Off and Ice Punch from Move Tutor! Though it would surprise me if it wasn't banned to Uber if that happens)
Scizor-mega@Scizorite
Technician
252 Spd/252 HP/4 Def
Careful Nature
-U turn
-Bullet Punch
-Roost
-Defog
My defogger, which is mandatory in a Volt-turn team. Overall Scizor is quite good, possessing a very strong U-turn and Priority-Technician-Bullet Punch which is very handy against opposing Pheromosa. Roost is reliable recovery which greatly lengthens its durability.
Tapu Koko@Magnet
Electrik Surge
252 SAtk/252 Spe/4 HP
Hasty Nature
-Volt Switch
-Thunderbolt
-Hp Ice
-U turn
Again, I don't want a Life Orb...This Pokemon is mainly for its fantastic ability, boosting all the Volt Switches and making it the best Volt Switcher in the game. Thunderbolt is for an electric STAB which can be spammed and Hp Ice is for the ground types. U-turn is for escaping ground types like Excadrill and also Tangrowth, but I thought maybe Dazzling Gleam is a better option?
Magnezone@Choice Specs
Magnet Pull
252 SAtk/248 HP/8 Spd
Modest Nature
-Volt Switch
-Thunderbolt
-Hp Fire
-Flash Cannon
Extremely useful for any Volt-turn team, defeating the team's main enemy Ferrothorn, while also dealing with Skarmory, Celesteela, Scizor and other pesky steel types, which is why I've included Thunderbolt and Hp Fire. Flash Cannon is reliable STAB, which hits quite hard. Choice Specs is mainly to OHKO Ferrothorn.
Rotom Wash@Leftovers
Levitate
252 SAtk/252 HP/4 Spd
Modest Nature
-Volt Switch
-Hydro Pump
-Hp Ice
-Thunderbolt
My team is extremely weak to fire types, which Rotom Wash handles quite well. It also synergies very well with Scizor. Hydro Pump is for a strong STAB, which hits exceptionally hard. Thunderbolt is reliable STAB and Hp ice is for the annoying Pokemon who have a double weakness to Ice. Maybe I should replace it with Hp Fire or Thunderbolt with Will-o-Wisp though...
I also thought of putting Assault-Vest-Magearna somewhere because it has great synergy with Landorus, while also possessing great move-set versatility and maybe Volt Switch-Zapdos as a defogger instead of Scizor? Their move-sets would be:
Magearna@Assault Vest
Soul Heart
252 SAtk/252 Hp/4 Def
Modest Nature
-Volt Switch
-Fleur Cannon
-Aura Sphere
-Ice Beam
Zapdos@Leftovers
Pressure
252 HP/252 Def/4 SAtk
Bold Nature
-Volt Switch
-Roost
-Toxic
-Defog