SM OU My OU team

[Wizard_Bird]

I'm new to teambuilding. I lost my other draft so I'm just going to list the team members because I don't feel like doing all that writing again.
Charizard-Mega-X (M) @ Charizardite X
Ability: Tough Claws
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Dragon Dance
- Flare Blitz
- Roost
- Dragon Claw

Donphan (M) @ Assault Vest
Ability: Sturdy
EVs: 248 HP / 252 Atk / 8 SpD
Adamant Nature
- Rapid Spin
- Earthquake
- Knock Off
- Ice Shard

Rotom-Wash @ Leftovers
Ability: Levitate
EVs: 252 HP / 68 SpA / 156 SpD / 32 Spe
Calm Nature
IVs: 0 Atk
- Will-O-Wisp
- Hydro Pump
- Volt Switch
- Pain Split

Heatran (M) @ Air Balloon
Ability: Flash Fire
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
IVs: 0 Atk
- Stealth Rock
- Lava Plume
- Taunt
- Flash Cannon

Nidoking @ Choice Scarf
Ability: Sheer Force
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Sludge Wave
- Earth Power
- Ice Beam
- Flamethrower

Bisharp (M) @ Leftovers
Ability: Defiant
Shiny: Yes
EVs: 188 HP / 252 Atk / 24 SpD / 44 Spe
Adamant Nature
- Sucker Punch
- Pursuit
- Iron Head
- X-Scissor

Yeah, I'm not that great at teambuilding so this is what I've got. I'd like some criticism.

 

[IronBullet]

Hi, welcome to Smogon! I'm locking your RMT for the time being as the forum rules require that you provide in-depth 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.