ORAS OU My first team

[Poxale]

Adam (Mew) @ Leftovers
Ability: Synchronize
Shiny: Yes
EVs: 252 HP / 104 Def / 152 Spe
Impish Nature
- Taunt
- Soft-Boiled
- Will-O-Wisp
- Knock Off

Zilla (Tyranitar) (M) @ Tyranitarite
Ability: Sand Stream
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Dragon Dance
- Stone Edge
- Fire Punch
- Earthquake

Mama (Chansey) @ Eviolite
Ability: Natural Cure
EVs: 4 HP / 252 Def / 252 SpD
Bold Nature
- Soft-Boiled
- Heal Bell
- Toxic
- Seismic Toss

Swordsman (Bisharp) (M) @ Black Glasses
Ability: Defiant
Shiny: Yes
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
- Knock Off
- Sucker Punch
- Iron Head
- Swords Dance

Tongsbug (Scizor) (M) @ Choice Band
Ability: Technician
EVs: 248 HP / 252 Atk / 8 SpD
Adamant Nature
- Bullet Punch
- Knock Off
- Superpower
- Bug Bite

Grasscrane (Chesnaught) (M) @ Leftovers
Ability: Bulletproof
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
- Spiky Shield
- Leech Seed
- Hammer Arm
- Wood Hammer

 

[one hitta quitta]

First off, you should add descriptions as to which each pokemon does(Thats a mistake a lot of new users make). Once you tell me what each pokemon your team does, I'll help you make it better.

 

[All Time Greatest]

You have no ice or water moves on your team, so the very common Landorus-T running knock off, earthquake, superpower, and U-turn or other common threats like gliscor will destroy your team aside from scizor.
Remember to keep common threats like Landorus-T and gliscor in mind when your building teams in the future.