First and foremost, I'd like to thank Mango Smoothie and everyone who contributed in making this guide. The guide truly helped me while making my team by detailing what type of Pokemon to use and which ones to use for certain situations. Without further ado, I will introduce the team.
Cresselia (F) @ Leftovers
Ability: Levitate
EVs: 252 HP/252 SpD/4 Def
Sassy Nature
IVs: 31/0/31/31/31/0
- Psychic
- Helping Hand
- Lunar Dance
- Trick Room
Cresselia was the Pokemon I decided to build my team around. She has great bulk and utility and would compliment my entire team. Psychic is her standard offensive move and goes hand in hand with Reuniclus' Psyshock. Helping hand is here due to my team being very physical and will be used after the initial Trick Room. Lunar Dance is there in order to bring back a fallen comrade if needed or when Cresselia is almost done.
Reuniclus @ Life Orb
Ability: Magic Guard
EVs: 252 HP/252 SpA/4 Def
Quiet Nature
IVs: 31/x/31/31/31/0
- Psyshock
- Shadow Ball
- Energy Ball
- Trick Room
Reuniclus is pretty standard with the exception of Energy Ball over Focus Blast. I chose Energy Ball over Focus blast due to the fact that my team had no grass type attacks and if I encountered a Rotom W, I would have a very difficult time. The 100 accuracy compared to 70 is also very important. Shadow Ball is for coverage and taking out ghosts while Psyshock is there due to special walls and is partnered with Cresselia's Psychic. If stumbling upon a Dark type such as Bisharp, Reuniclus will be switching out because despite Trick Room, Sucker Punch will hit me and I can't afford a missed Focus Blast.
Machamp (M) @ Life Orb
Ability: No Guard
EVs: 252 HP/252 Att/4 SpD
Brave Nature
IVs: 31/31/31/x/31/0
- Dynamic Punch
- Stone Edge
- Poison Jab
- Protect
Many people will ask as to why I chose Machamp over Conkeldurr. The reason is No Guard. With No Guard, I'll be able to land STAB Dynamic Punches to anyone that is weak to fighting. Stone Edge is there because it's a great move that hits many Pokemon hard and I'll have 100 accuracy with it. Poison Jab is there due to the fact that my team needed a Poison type attack for for fairies and it provides coverage for Machamp. Protect is there because if Machamp has to begin alongside Cresselia, he will protect the first turn and run wild after Trick Room is set.
Azumarill @ Life Orb
Ability: Huge Power
EVs: 252 HP/252 Att/4 SpD
Brave Nature
IVs: 31/31/31/x/31/0
- Aqua Jet
- Play Rough
- Ice Punch
- Waterfall
Azumarill is a perfect fit for this team; coverage for his comrades and my main Fairy. Initially, he was brought here to cover Machamp from Brave Bird Talonflame with Aqua Jet, but I then realized his versatility is amazing. Aque Jet will hit hard and has priority for when Trick Room is over and can deal with Talonflame in and out of Trick Room. Play Rough will serve as my main Fairy attack. Ice Punch is here for coverage against Grass types, and to deal with anything else that is weak to ice. I chose Waterfall over Aqua Tail due to accuracy; Waterfall shall be used when there is no fear of enemy priority and is stronger than Aqua Jet. Belly Drum is not here because if I need the extra attack boost, I have Cresselia's Helping Hand.
Bisharp (M) @ Life Orb
Ability: Defiant
EVs: 252 HP/252 Att/4 Def
Brave Nature
IVs: 31/31/31/x/31/0
- Sucker Punch
- Iron Head
- Knock Off
- Protect
Bisharp is here due to needing someone who could resist Ghost and Dark types. After testing him, he also sits nice with my team. Sucker Punch can due tons of damage to anyone weak to it that is preparing an attack (mainly Focus Blast cover). Iron Head is here due to the fact that I need a steel attack and it does good damage with STAB. Knock Off is here for utility and because Sucker Punch has low PP. Protect is here for when Trick Room needs to be set up once more. Helping Hand from Cresselia will help him a lot.
Charizard (M) @ Charizardnite X
Ability: Tough Claws
EVs: 252 Att/252 Spe/4 Def
Jolly Nature
IVs: 31/31/31/x/31/31
- Flare Blitz
- Dragon Claw
- Thunder Punch
- Dragon Dance
Last but not least, Charizard X. He will be my late game sweeper that will have to fight when there is no Trick Room available. He runs Jolly nature because he will need maximum speed in order to sweep. Flare Blitz is here as he will deal with anyone that is weak to fire and will take care of people such as Mega Mawile. Dragon Claw is here to hit any dragons as well as providing nice STAB damage. Charizard X runs Thunder Punch over Roost because late game, there will be no time to rest and he can take out the pesky water types. Dragon Dance is here because he'll be able to boost himself if an opportunity arises and will be nearly unstoppable.
That is my team. A few weaknesses I encountered were that I rely heavily on certain Pokemon to deal with what they're strong against (Charizard for Fire, Reuniclus for Grass, etc.) Also, Mega Mawile can pose a big threat if it introduced inside of Trick Room because Charizard X is the only one on my team that can deal with her. The last thing is that I'm not sure if Life Orb is the best item to go for with Bisharp and Machamp.
Thanks for taking the time to rate my team and I appreciate all feedback. :)

Cresselia (F) @ Leftovers
Ability: Levitate
EVs: 252 HP/252 SpD/4 Def
Sassy Nature
IVs: 31/0/31/31/31/0
- Psychic
- Helping Hand
- Lunar Dance
- Trick Room

Reuniclus @ Life Orb
Ability: Magic Guard
EVs: 252 HP/252 SpA/4 Def
Quiet Nature
IVs: 31/x/31/31/31/0
- Psyshock
- Shadow Ball
- Energy Ball
- Trick Room

Machamp (M) @ Life Orb
Ability: No Guard
EVs: 252 HP/252 Att/4 SpD
Brave Nature
IVs: 31/31/31/x/31/0
- Dynamic Punch
- Stone Edge
- Poison Jab
- Protect

Azumarill @ Life Orb
Ability: Huge Power
EVs: 252 HP/252 Att/4 SpD
Brave Nature
IVs: 31/31/31/x/31/0
- Aqua Jet
- Play Rough
- Ice Punch
- Waterfall

Bisharp (M) @ Life Orb
Ability: Defiant
EVs: 252 HP/252 Att/4 Def
Brave Nature
IVs: 31/31/31/x/31/0
- Sucker Punch
- Iron Head
- Knock Off
- Protect

Charizard (M) @ Charizardnite X
Ability: Tough Claws
EVs: 252 Att/252 Spe/4 Def
Jolly Nature
IVs: 31/31/31/x/31/31
- Flare Blitz
- Dragon Claw
- Thunder Punch
- Dragon Dance
That is my team. A few weaknesses I encountered were that I rely heavily on certain Pokemon to deal with what they're strong against (Charizard for Fire, Reuniclus for Grass, etc.) Also, Mega Mawile can pose a big threat if it introduced inside of Trick Room because Charizard X is the only one on my team that can deal with her. The last thing is that I'm not sure if Life Orb is the best item to go for with Bisharp and Machamp.
Thanks for taking the time to rate my team and I appreciate all feedback. :)