SM OU My first Competitive team

[DraconisZardi]

Yeah so this is my first competitive team, what can I improve or change?

Charizard-Mega-X @ Charizardite X
Ability: Tough Claws
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Dragon Dance
- Dragon Claw
- Flare Blitz
- Earthquake

Jirachi @ Leftovers
Ability: Serene Grace
EVs: 248 HP / 104 SpD / 156 Spe
Careful Nature
- Stealth Rock
- U-turn
- Iron Head
- Healing Wish

Zapdos @ Leftovers
Ability: Static
EVs: 248 HP / 240 Def / 20 Spe
Bold Nature
IVs: 0 Atk
- Discharge
- Roost
- Defog
- Heat Wave

Hoopa-Unbound @ Choice Band
Ability: Magician
EVs: 252 HP / 4 SpD / 252 Spe
Jolly Nature
- Hyperspace Fury
- Ice Punch
- Drain Punch
- Zen Headbutt

Tapu Lele @ Choice Scarf
Ability: Psychic Surge
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Moonblast
- Psychic
- Hidden Power [Fire]
- Psyshock

Toxapex @ Black Sludge
Ability: Merciless
EVs: 252 HP / 16 Def / 240 SpD
Calm Nature
IVs: 0 Atk
- Toxic Spikes
- Scald
- Haze
- Recover

 

[Twilight]

Hi, welcome to Smogon! I'm locking your RMT for the time being as the forum rules require that you provide at least 3 lines of descriptions for each Pokemon to explain their roles. Please read the rules carefully and take a look at Team Showcase to see the level of detail we require. PM me with updated descriptions and I'll be happy to unlock this.